[Federal Register Volume 61, Number 123 (Tuesday, June 25, 1996)]
[Notices]
[Pages 32887-32891]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 96-16046]



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DEPARTMENT OF TRANSPORTATION

Weather Observation Service Standards

AGENCY: Federal Aviation Administration (FAA) DOT.

ACTION: Notice of policy statement.

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SUMMARY: The American people have demanded a smaller, more efficient 
government; toward that end, the resources of the National Airspace 
System must be streamlined and service provided in a safe yet 
economical way. In November 1994, senior management officials from the 
Federal Aviation Administration (FAA) and the National Weather Service 
(NWS) met with executives from fourteen national aviation associations 
concerning surface aviation observation services. They reached an 
agreement that the government would work with industry to define 
various support levels for surface observations.
    In addition, in March 1995, and in accordance with the Office of 
Management and Budget (OMB) policy, the FAA began the process to assume 
responsibility for aviation surface weather observations beginning in 
FY 1996. As the NWS automates field offices and reallocates their 
personnel under this plan, the FAA will undertake accountability for 
observations at many NWS ASOS sites. The NWS has begun transitioning 
these ASOS sites to the FAA as the ASOSs are commissioned and has 
solicited public comment (61 FR 19595; May 2, 1996). The FAA also 
expanded by more than two hundred, the sites to receive ASOSs, thus 
enhancing safety at sites without weather observations. All of these 
activities prompted the FAA to take aggressive action in addressing 
surface aviation observation requirements and do it within modest 
resource gains.
    As a result, a government/industry team has worked for a year and a 
half to comprehensively reassess the requirements for surface 
observations at the nation's airports. That work has resulted in 
agreement on a set of service standards as well as the FAA and NWS 
Automated Surface Observing System (ASOS) sites to which the standards 
will apply. This notice outlines the four kinds of service, explains 
the method used to determine which airports receive which type of 
service, and contains a listing of the airports and the service 
categories in which they fall. The FAA, NWS and Industry 
representatives believe the service standards approach supports the 
best allocation of scarce resources.

FOR FURTHER INFORMATION CONTACT:
Ragena Aarnio, Aviation Policy and Industry Relations Branch, 400 7th 
St SW, Plaza 200, Washington, DC 20590; telephone (202) 336-4474.

SUPPLEMENTARY INFORMATION: The term Service Standards refers to four 
levels of detail in the weather observation at sites where there is a 
commissioned ASOS. The first category, known as Service Level D, is 
completely automated service, at which the ASOS observation will 
constitute the entire observation, i.e., no additional weather 
information is added by a human weather observer. A partial list of the 
airports that fit in this category are provided at the end of this 
Notice. Some of these airports currently have contract weather 
observers providing the service. Many other sites (60-80) will be 
expanded to include automated systems; they are currently under review. 
Information on specific additional sites is available upon request.
    The second category, tower-augmented service, also known as Service 
Level C, encompasses approximately two hundred and fifty airports. At 
this level, a human observer adds additional information to the 
automated observation. Augmentation includes the following parameters: 
thunderstorms, tornadoes, hail, virga, volcanic ash, and tower 
visibility. In addition, in the event of an ASOS malfunction or the 
ASOS reporting unrepresentative data, the human observer may insert the 
correct value or more representative information into the observation. 
This is referred to as backup.
    Backup consists of inserting the following parameters where 
available: wind, visibility, precipitation/obstruction to vision type, 
cloud height, sky cover, temperature, dewpoint and altimeter setting. 
This level of service would be provided at all towered airports during 
hours of operation. During hours that the tower is closed, the ASOS 
will provide observations without backup or augmentation. These 
airports are listed as tower-agumented (Service Level C) airports at 
the end of this notice. Although this category is listed as tower-
agumented, the service may be provided by Flight Service Stations at 
selected sites.
    At 135 airports, adding more detail to the weather observation was 
considered optimum. These airports were divided into two categories, 
major aviation hubs and high traffic volume airports with average or 
worse weather, referred to as Service Level A airports; and the 
remaining group of airports that are smaller hubs or special airports 
in other ways, that have worse than average bad weather operations for 
thunderstorms and/or freezing/frozen precipitation, and/or that are 
remote airports, referred to as Service Level B airports.
    Service Level B airports will receive augmentation and backup (C-
level service) plus long-line Runway Visual Range (RVR), which may be 
an instantaneous readout. If observed, the following elements will be 
added to the observation: freezing drizzle versus freezing rain, ice 
pellets, snow depth and snow increasing rapidly remarks, thunderstorm/
lightning location remarks and observed significant weather not at the 
station remarks. At selected airports in this category, during

[[Page 32888]]

hours of low traffic volume, the service may revert to Service Level C, 
tower-augmented service, or Service Level D, automated service.
    Service Level A airports will receive, in addition to the services 
described above, 10 minute long-line RVR or additional visibility 
increments of \1/8\/, \1/16\ and 0. If observed, the following elements 
will be added to the observation: sector visibility, variable sky 
condition, cloud layers above 12,000 feet and cloud types, widespread 
dust, sand and other obscurations and volcanic eruptions.
    At selected sites, Flight Service Stations may do the support at 
Level A, B, or C airports. In lieu of a contract of NWS observer at a 
Level A, B or C airport, a non-government entity, such as a Fixed Base 
Operator or commercial aviation operator may agree to provide 
augmentation or backup to the ASOS observation, at no cost to the 
government. On a case-by-case basis, arrangements can be made to 
install an operator interface device, provide training materials, and 
determine a payment schedule for any recurring costs associated with 
the activity.
    More detailed information on Service Standard procedures, including 
augmentation and backup, is contained in FAA Order 7900.5A. This 
document is available upon request.

Implementation Schedule

    The date for implementation of Service Standards for each airport 
will be based upon a number of factors, including NWS transition dates, 
ASOS commissioning dates and the FAA budget. Sufficient budget for 
implementing Service Levels has been requested for FY 97. However, FAA 
budget resources are insufficient in FY 96 to fully fund observations 
at the A and B Service Levels at all sites designated for those Service 
Standards. For Level 5 towered sites, the FAA has already allocated 
funds for Service Level A support to begin immediately upon 
commissioning of ASOS; those sites are identified by an asterisk in the 
list at this end of this Notice.
    The implementation date will be included in a Notice to Airmen and/
or in the Airport/Facility Directory when transition is imminent. 
Information on the schedule for specific sites is available on request.

Ranking Process

    The criteria used to rank the airports were based on (1) occurrence 
of significant weather weighted by traffic counts; (2) distance to the 
nearest suitable alternate airport; and (3) critical airport 
characteristics. These criteria produced a score for each airport which 
determined their level of service. Seventy-eight ASOS sites have the 
greatest augmentation needs and will receive expanded service (Level 
A); fifty-seven to receive enhanced service (Level B); two hundred and 
fifty to receive tower augmentation (Level C); and another nearly four 
hundred to receive automated service (Level D). The composite scores 
assigned were solely based on weighted objective criteria designed to 
capture critical airport characteristics as follows.

Bad Weather Operations Score

    This score is calculated by (1) adding the percentage of times that 
the airport is impacted by thunderstorms, freezing and/or frozen 
precipitation (including freezing rain, freezing drizzle, snow, snow 
pellets, snow squalls, snow showers, ice pellets, ice pellet showers, 
ice crystals), and visibility less than or equal to .5 mile and 
multiplying that percentage sum times total operations at that airport; 
(2) multiplying the percentage of time the airport experiences 
visibility less than or equal to 3 miles times the number of all 
operations and then multiplying that figure by .5; (3) summing the 
figures from steps 1-2 above; and (4) setting the resultant figures to 
a linear scale ranging from 0 to 18. The total score range was set at 0 
to 18 to coincide with the combined total score range of the airport 
characteristics and the alternate airport criteria as described in the 
next two paragraphs. The traffic count data utilized is FY 1994.
    For sites that did not have any weather information available, an 
alternate method was devised to compute weather scores. Each airport 
which had a composite score of 2 or more, even without weather data, 
was assigned weather information (surrogate weather) from the nearest 
airport with similar weather. This step was omitted for airports with a 
non-weather composite score of less than 2 because adding even a high 
weather score to such sites would not cause them to need expanded 
service. A list of these airports and the surrogate weather utilized 
for them is available upon request.

Score for Distance to Nearest Suitable Alternate Airport

    This score gives credit for airports for which the nearest suitable 
alternate is a greater distance away. Where available, these alternates 
were selected from an Air Transport Association-provided list of actual 
alternates utilized for certain airports. Otherwise, an automated 
approach was used to determine these alternates based on the following 
requirements
    <bullet> The alternate site must have some observation 
capabilities. It must be an FAA or NWS ASOS site; an FAA or NWS 
contract weather observer observation site; a Federal or Non-Federal 
Automated Weather Observing Site (AWOS) site; or a Supplementary 
Aviation Weather Reporting Site (SAWRS) station.
    <bullet> If the destination airport has a Terminal Airdrome 
Forecast (TAF) issued, the alternate site must have a TAF issued also.
    <bullet> If the destination airport is a Part 139 airport, the 
alternate site must be a Part 139 airport also.
    The scoring was done using Table 1.

           Table 1.--Nearest Suitable Alternate Airport Score           
------------------------------------------------------------------------
             Miles to the nearest alternate airport               Score 
------------------------------------------------------------------------
0-75...........................................................        0
76-125.........................................................        1
126-175........................................................        2
176-225........................................................        3
226-275........................................................        4
276 miles or greater...........................................        5
------------------------------------------------------------------------

Airport Characteristics Score

    This score is given based on the applicability of the scores in 
Table 2. The tower levels are those established as 3/11/96.

                 Table 2.--Airport Characteristics Score                
------------------------------------------------------------------------
                        Characteristics                           Score 
------------------------------------------------------------------------
Tower Level....................................................      0-5
Special Airport................................................     0, 1
Hub Airport....................................................     0, 2
National Airspace Reporting System (NPRS) Airport..............      0,1
Terminal Doppler Weather Radar (TDWR) Airport..................     0, 1
CAT II/III Qualified...........................................      0-2
Long-Line RVR..................................................     0, 1
------------------------------------------------------------------------

Ranking

    The scores from the three areas described above were then added 
together and each airport was assigned a composite score and ranked 
accordingly. Information on the process of determining the exact 
boundaries between service levels, as well as scores for individual 
airports, are available upon request.
    This following list includes the service level categories and the 
airports that fall into each category. The airports in each service 
level category are listed by state and the city where the airport is 
located. The airport's three letter location identifier is also 
included. For

[[Page 32889]]

Level 5 towered sites, the FAA has already allocated funds for Service 
Level A support to begin immediately upon commissioning of ASOS; those 
sites are identified by an asterisk in the list below.

                             SERVICE LEVEL A                            
                                                                        
AK.....................  Anchorage...............  ANC                  
AK.....................  Bethel..................  BET                  
AK.....................  Fairbanks...............  FAI                  
AK.....................  Juneau..................  JNU                  
AZ.....................  Phoenix.................  PHX*                 
CA.....................  Fresno..................  FAT                  
CA.....................  Long Beach..............  LGB                  
CA.....................  Los Angeles.............  LAX*                 
CA.....................  Oakland.................  OAK                  
CA.....................  Ontario.................  ONT                  
CA.....................  San Diego...............  SAN                  
CA.....................  San Francisco...........  SFO*                 
CA.....................  Santa Ana...............  SNA                  
CA.....................  Van Nuys................  VNY                  
CO.....................  Denver..................  APA                  
CO.....................  Denver..................  DEN*                 
CT.....................  Windsor Locks...........  BDL                  
DC.....................  Washington..............  DCA*                 
DC.....................  Washington..............  IAD*                 
FL.....................  Jacksonville............  JAX                  
FL.....................  Miami...................  MIA*                 
FL.....................  Orlando.................  MCO*                 
FL.....................  Tallahassee.............  TLH                  
FL.....................  Tampa...................  TPA*                 
GA.....................  Atlanta.................  ATL*                 
IA.....................  Des Moines..............  DSM                  
IL.....................  Chicago.................  MDW                  
IL.....................  Chicago.................  ORD*                 
IL.....................  Rockford................  RFD                  
IN.....................  Indianapolis............  IND                  
KS.....................  Wichita.................  ICT                  
KY.....................  Louisville..............  SDF                  
KY/OH..................  Covington/Cincinnati      CVG*                 
LA.....................  New Orleans.............  MSY                  
MA.....................  Boston..................  BOS*                 
MD.....................  Baltimore...............  BWI                  
MI.....................  Detroit.................  DTW*                 
MI.....................  Grand Rapids............  GRR                  
MI.....................  Lansing.................  LAN                  
MI.....................  Pontiac.................  PTK                  
MN.....................  Minneapolis.............  MSP                  
MO.....................  Kansas City.............  MCI                  
MO.....................  St Louis................  STL*                 
NC.....................  Charlotte...............  CLT*                 
NC.....................  Greensboro..............  GSO                  
NC.....................  Raleigh/Durham..........  RDU                  
NJ.....................  Newark..................  EWR*                 
NM.....................  Albuquerque.............  ABQ                  
NV.....................  Las Vegas...............  LAS                  
NY.....................  Albany..................  ALB                  
NY.....................  Buffalo.................  BUF                  
NY.....................  New York................  JFK*                 
NY.....................  New York................  LGA*                 
NY.....................  Rochester...............  ROC                  
NY.....................  Syracuse................  SYR                  
OH.....................  Akron...................  CAK                  
OH.....................  Cleveland...............  CLE                  
OH.....................  Columbus................  CMH                  
OH.....................  Dayton..................  DAY                  
OK.....................  Oklahoma City...........  OKC                  
OK.....................  Tulsa...................  TUL                  
OR.....................  Portland................  PDX                  
PA.....................  Philadelphia............  PHL*                 
PA.....................  Pittsburgh..............  PIT*                 
RI.....................  Providence..............  PVD                  
TN.....................  Memphis.................  MEM                  
TN.....................  Nashville...............  BNA                  
TX.....................  Dallas..................  DAL                  
TX.....................  Dallas-Forth Worth......  DFW*                 
TX.....................  Houston.................  HOU                  
TX.....................  Houston.................  IAH                  
TX.....................  San Antonio.............  SAT                  
UT.....................  Salt Lake City..........  SLC                  
VA.....................  Richmond................  RIC                  
WA.....................  Seattle.................  BFI                  
WA.....................  Seattle.................  SEA                  
WA.....................  Spokane.................  GEG                  
WI.....................  Milwaukee...............  MKE                  
                                                                        
                             SERVICE LEVEL B                            
                                                                        
AK.....................  Deadhorse...............  SCC                  
AK.....................  King Salmon.............  AKN                  
AK.....................  Kodiak..................  ADQ                  
AK.....................  Nome....................  OME                  
AL.....................  Huntsville..............  HSV                  
AL.....................  Montgomery..............  MGM                  
AR.....................  Little Rock.............  LIT                  
AZ.....................  Grand Canyon............  GCN                  
AZ.....................  Tucson..................  TUS                  
CA.....................  Sacramento..............  SMF                  
CA.....................  San Jose................  SJC                  
CA.....................  Santa Barbara...........  SBA                  
CO.....................  Colorado Springs........  COS                  
FL.....................  Daytona Beach...........  DAB                  
FL.....................  Fort Lauderdale.........  FLL                  
FL.....................  West Palm Beach.........  PBI                  
GA.....................  Savannah................  SAV                  
HI.....................  Honolulu................  HNL                  
IL.....................  Champaign/Urbana/.......  CMI                  
IL.....................  Moline..................  MLI                  
IL.....................  Peoria..................  PIA                  
IN.....................  Fort Wayne..............  FWA                  
IN.....................  Lafayette...............  LAF                  
IN.....................  South Bend..............  SBN                  
LA.....................  Baton Rouge.............  BTR                  
LA.....................  Shreveport..............  SHV                  
ME.....................  Bangor..................  BGR                  
MI.....................  Flint...................  FNT                  
MI.....................  Kalamazoo...............  AZO                  
MI.....................  Muskegon................  MKG                  
MI.....................  Saginaw.................  MBS                  
MI.....................  Traverse City...........  TVC                  
MN.....................  Minneapolis.............  FCM                  
MN.....................  Minneapolis.............  MIC                  
MS.....................  Jackson.................  JAN                  
MT.....................  Billings................  BIL                  
ND.....................  Grand Forks.............  GFK                  
NE.....................  Lincoln.................  LNK                  
NE.....................  Omaha...................  OMA                  
NJ.....................  Teterboro...............  TEB                  
NY.....................  Islip...................  ISP                  
NY.....................  White Plains............  HPN                  
OH.....................  Youngstown/Warren.......  YNG                  
PA.....................  Pittsburgh..............  AGC                  
PR.....................  San Juan................  SJU                  
SC.....................  Charleston..............  CHS                  
SC.....................  Columbia................  CAE                  
TN.....................  Chattanooga.............  CHA                  
TN.....................  Knoxville...............  TYS                  
TX.....................  Corpus Christi..........  CRP                  
TX.....................  El Paso.................  ELP                  
TX.....................  Lubbock.................  LBB                  
TX.....................  Midland.................  MAF                  
VA.....................  Norfolk.................  ORF                  
VT.....................  Burlington..............  BTV                  
WI.....................  Madison.................  MSN                  
WV.....................  Charleston..............  CRW                  
                                                                        
                         TOWER-AUGMENTED SERVICE                        
                            (SERVICE LEVEL C)                           
                                                                        
AK.....................  Anchorage...............  MRI                  
AK.....................  Kenai...................  ENA                  
AL.....................  Birmingham..............  BHM                  
AL.....................  Dothan..................  DHN                  
AL.....................  Mobile..................  BFM                  
AL.....................  Mobile..................  MOB                  
AL.....................  Tuscaloosa..............  TCL                  
AR.....................  Fayetteville............  FYV                  
AR.....................  Fort Smith..............  FSM                  
AR.....................  Pine Bluff..............  PBF                  
AR.....................  Texarkana...............  TXK                  
AZ.....................  Flagstaff...............  FLG                  
AZ.....................  Phoenix.................  DVT                  
AZ.....................  Prescott................  PRC                  
AZ.....................  Scottsdale..............  SDL                  
CA.....................  Bakersfield.............  BFL                  
CA.....................  Burbank.................  BUR                  
CA.....................  Carlsbad................  CRQ                  
CA.....................  Chino...................  CNO                  
CA.....................  Concord.................  CCR                  
CA.....................  Fullerton...............  FUL                  
CA.....................  Hawthorne...............  HHR                  
CA.....................  Hayward.................  HWD                  
CA.....................  Livermore...............  LVK                  
CA.....................  Modesto.................  MOD                  
CA.....................  Monterey................  MRY                  
CA.....................  Napa....................  APC                  
CA.....................  Oxnard..................  OXR                  
CA.....................  Palm Springs............  PSP                  
CA.....................  Palmdale................  PMD                  
CA.....................  Redding.................  RDD                  
CA.....................  Riverside...............  RAL                  
CA.....................  Sacramento..............  SAC                  
CA.....................  Salinas.................  SNS                  
CA.....................  San Diego...............  MYF                  
CA.....................  San Diego...............  SDM                  
CA.....................  San Luis Obispo.........  SBP                  
CA.....................  Santa Maria.............  SMX                  
CA.....................  Santa Monica............  SMO                  
CA.....................  Santa Rosa..............  STS                  
CA.....................  South Lake Tahoe........  TVL                  
CA.....................  Stockton................  SCK                  
CO.....................  Aspen...................  ASE                  
CO.....................  Grand Junction..........  GJT                  
CO.....................  Pueblo..................  PUB                  
CT.....................  Bridgeport..............  BDR                  
CT.....................  Danbury.................  DXR                  
CT.....................  Groton/New London.......  GON                  
CT.....................  Hartford................  HFD                  
CT.....................  New Haven...............  HVN                  
DE.....................  Wilmington..............  ILG                  
FL.....................  Fort Lauderdale.........  FXE                  
FL.....................  Fort Myers..............  FMY                  
FL.....................  Fort Myers..............  RSW                  
FL.....................  Fort Pierce.............  FPR                  
FL.....................  Gainesville.............  GNV                  
FL.....................  Hollywood...............  HWO                  
FL.....................  Jacksonville............  CRG                  
FL.....................  Key West................  EYW                  
FL.....................  Melbourne...............  MLB                  
FL.....................  Miami...................  OPF                  
FL.....................  Miami...................  TMB                  
FL.....................  Orlando.................  ORL                  
FL.....................  Panama City.............  PFN                  
FL.....................  Pensacola...............  PNS                  
FL.....................  Pompano Beach...........  PMP                  
FL.....................  Sarasota/Bradenton/.....  SRQ                  
FL.....................  St Petersburg...........  SPG                  
FL.....................  St Petersburg/Clearwater  PIE                  
FL.....................  Vero Beach..............  VRB                  
GA.....................  Albany..................  ABY                  
GA.....................  Athens..................  AHN                  
GA.....................  Atlanta.................  FTY                  
GA.....................  Atlanta.................  PDK                  
GA.....................  Augusta.................  AGS                  

[[Page 32890]]

                                                                        
GA.....................  Columbus................  CSG                  
GA.....................  Macon...................  MCN                  
HI.....................  Hilo....................  ITO                  
HI.....................  Kahului.................  OGG                  
HI.....................  Kailua/Kona.............  KOA                  
HI.....................  Lihue...................  LIH                  
IA.....................  Cedar Rapids............  CID                  
IA.....................  Dubuque.................  DBQ                  
IA.....................  Sioux City..............  SUX                  
IA.....................  Waterloo................  ALO                  
ID.....................  Boise...................  BOI                  
ID.....................  Idaho Falls.............  IDA                  
ID.....................  Lewiston................  LWS                  
ID.....................  Pocatello...............  PIH                  
ID.....................  Twin Falls..............  TWF                  
IL.....................  Cahokia/St Louis........  CPS                  
IL.....................  Carbondale/Murphysboro..  MDH                  
IL.....................  Chicago/Aurora..........  ARR                  
IL.....................  Chicago/West Chicago/...  DPA                  
IL.....................  Chicago/Wheeling/.......  PWK                  
IL.....................  Decatur.................  DEC                  
IL.....................  Springfield.............  SPI                  
IN.....................  Bloomington.............  BMG                  
IN.....................  Evansville..............  EVV                  
IN.....................  Muncie..................  MIE                  
IN.....................  Terre Haute.............  HUF                  
KS.....................  Hutchinson..............  HUT                  
KS.....................  Olathe..................  OJC                  
KS.....................  Salina..................  SLN                  
KS.....................  Topeka..................  FOE                  
KS.....................  Topeka..................  TOP                  
KY.....................  Lexington...............  LEX                  
KY.....................  Louisville..............  LOU                  
LA.....................  Alexandria..............  ESF                  
LA.....................  Lafayette...............  LFT                  
LA.....................  Lake Charles............  LCH                  
LA.....................  Monroe..................  MLU                  
LA.....................  New Iberia..............  ARA                  
LA.....................  New Orleans.............  NEW                  
LA.....................  Shreveport..............  DTN                  
MA.....................  Bedford.................  BED                  
MA.....................  Beverly.................  BVY                  
MA.....................  Hyannis.................  HYA                  
MA.....................  Lawrence................  LWM                  
MA.....................  Nantucket...............  ACK                  
MA.....................  New Bedford.............  EWB                  
MA.....................  Norwood.................  OWD                  
MA.....................  Westfield...............  BAF                  
MA.....................  Worcester...............  ORH                  
MD.....................  Hagerstown..............  HGR                  
ME.....................  Portland................  PWM                  
MI.....................  Ann Arbor...............  ARB                  
MI.....................  Battle Creek............  BTL                  
MI.....................  Detroit.................  DET                  
MI.....................  Detroit.................  YIP                  
MN.....................  Duluth..................  DLH                  
MN.....................  Rochester...............  RST                  
MN.....................  St Paul.................  STP                  
MO.....................  Columbia................  COU                  
MO.....................  Joplin..................  JLN                  
MO.....................  Kansas City.............  MKC                  
MO.....................  Springfield.............  SGF                  
MO.....................  St Joseph...............  STJ                  
MO.....................  St Louis................  SUS                  
MS.....................  Greenville..............  GLH                  
MS.....................  Gulfport................  GPT                  
MS.....................  Jackson.................  HKS                  
MS.....................  Meridian................  MEI                  
MT.....................  Great Falls.............  GTF                  
MT.....................  Helena..................  HLN                  
MT.....................  Missoula................  MSO                  
NC.....................  Asheville...............  AVL                  
NC.....................  Fayetteville............  FAY                  
NC.....................  Hickory.................  HKY                  
NC.....................  Wilmington..............  ILM                  
NC.....................  Winston Salem...........  INT                  
ND.....................  Bismarck................  BIS                  
ND.....................  Fargo...................  FAR                  
ND.....................  Minot...................  MOT                  
NE.....................  Grand Island............  GRI                  
NH.....................  Lebanon.................  LEB                  
NH.....................  Manchester..............  MHT                  
NJ.....................  Atlantic City...........  ACY                  
NJ.....................  Caldwell................  CDW                  
NJ.....................  Morristown..............  MMU                  
NJ.....................  Trenton.................  TTN                  
NM.....................  Roswell.................  ROW                  
NM.....................  Santa Fe................  SAF                  
NV.....................  Reno....................  RNO                  
NY.....................  Binghamton..............  BGM                  
NY.....................  Elmira..................  ELM                  
NY.....................  Farmingdale.............  FRG                  
NY.....................  Niagara Falls...........  IAG                  
NY.....................  Poughkeepsie............  POU                  
NY.....................  Utica...................  UCA                  
OH.....................  Cincinnati..............  LUK                  
OH.....................  Cleveland...............  BKL                  
OH.....................  Columbus................  OSU                  
OH.....................  Mansfield...............  MFD                  
OH.....................  Toledo..................  TOL                  
OK.....................  Clinton.................  CSM                  
OK.....................  Lawton..................  LAW                  
OK.....................  Oklahoma City...........  PWA                  
OK.....................  Tulsa...................  RVS                  
OR.....................  Eugene..................  EUG                  
OR.....................  Klamath Falls...........  LMT                  
OR.....................  Medford.................  MFR                  
OR.....................  Pendleton...............  PDT                  
OR.....................  Portland................  HIO                  
OR.....................  Portland................  TTD                  
OR.....................  Salem...................  SLE                  
PA.....................  Allentown...............  ABE                  
PA.....................  Erie....................  ERI                  
PA.....................  Harrisburg..............  CXY                  
PA.....................  Harrisburg..............  MDT                  
PA.....................  Lancaster...............  LNS                  
PA.....................  Philadelphia............  PNE                  
PA.....................  Reading.................  RDG                  
PA.....................  Wilkes-Barre/Scranton...  AVP                  
PA.....................  Williamsport............  IPT                  
SC.....................  Florence................  FLO                  
SC.....................  Greenville..............  GMU                  
SC.....................  Greer...................  GSP                  
SC.....................  North Myrtle Beach......  CRE                  
SD.....................  Aberdeen................  ABR                  
SD.....................  Rapid City..............  RAP                  
SD.....................  Sioux Falls.............  FSD                  
TN.....................  Bristol/Johnson/          TRI                  
                          Kingsport.                                    
TX.....................  Abilene.................  ABI                  
TX.....................  Amarillo................  AMA                  
TX.....................  Austin..................  AUS                  
TX.....................  Beaumont/Port Arthur....  BPT                  
TX.....................  Brownsville.............  BRO                  
TX.....................  College Station.........  CLL                  
TX.....................  Dallas..................  RBD                  
TX.....................  Fort Worth..............  AFW                  
TX.....................  Fort Worth..............  FTW                  
TX.....................  Harlingen...............  HRL                  
TX.....................  Housotn.................  DWH                  
TX.....................  Longview................  GGG                  
TX.....................  McAllen.................  MFE                  
TX.....................  San Angelo..............  SJT                  
TX.....................  San Antonio.............  SSF                  
TX.....................  Tyler...................  TYR                  
TX.....................  Waco....................  ACT                  
UT.....................  Ogden...................  OGD                  
VA.....................  Charlottesville.........  CHO                  
VA.....................  Lynchburg...............  LYH                  
VA.....................  Newport News............  PHF                  
VA.....................  Roanoke.................  ROA                  
VI.....................  Charlotte Amalie........  STT                  
VI.....................  Christiansted...........  STX                  
WA.....................  Everett.................  PAE                  
WA.....................  Moses Lake..............  MWH                  
WA.....................  Olympia.................  OLM                  
WA.....................  Pasco...................  PSC                  
WA.....................  Renton..................  RNT                  
WA.....................  Spokane.................  SFF                  
WA.....................  Tacoma..................  TIW                  
WA.....................  Walla Walla.............  ALW                  
WA.....................  Yakima..................  YKM                  
WI.....................  Green Bay...............  GRB                  
WI.....................  Kenosha.................  ENW                  
WI.....................  La Crosse...............  LSE                  
WI.....................  Oshkosh.................  OSH                  
WV.....................  Clarksburg..............  CKB                  
WV.....................  Huntington..............  HTS                  
WV.....................  Morgantown..............  MGW                  
WV.....................  Wheeling................  HLG                  
WY.....................  Casper..................  CPR                  
WY.....................  Cheyenne................  CYS                  
                                                                        
                            AUTOMATED SERVICE                           
                            (SERVICE LEVEL D)                           
                                                                        
AK.....................  Anchorage...............  LHD                  
AK.....................  Annette.................  ANN                  
AK.....................  Barrow..................  BRW                  
AK.....................  Bettles.................  BTT                  
AK.....................  Cold Bay................  CDB                  
AK.....................  Cordova.................  CDV                  
AK.....................  Delta Junction/Ft Greely  BIG                  
AK.....................  Gulkana.................  GKN                  
AK.....................  Homer...................  HOM                  
AK.....................  Iliamna.................  ILI                  
AK.....................  Ketchikan...............  KTN                  
AK.....................  Kotzebue................  OTZ                  
AK.....................  McGrath.................  MCG                  
AK.....................  Nenana..................  ENN                  
AK.....................  Northway................  ORT                  
AK.....................  Palmer..................  PAQ                  
AK.....................  Sitka...................  SIT                  
AK.....................  St Paul Island..........  SNP                  
AK.....................  Talkeetna...............  TKA                  
AK.....................  Tanana..................  TAL                  
AK.....................  Yakutat.................  YAK                  
AL.....................  Anniston................  ANB                  
AL.....................  Muscle Shoals...........  MSL                  
AR.....................  El Dorado...............  ELD                  
AR.....................  Harrison................  HRO                  
AR.....................  Hot Springs.............  HOT                  
AR.....................  Jonesboro...............  JBR                  
AZ.....................  Kingman.................  IGM                  
AZ.....................  Page....................  PGA                  
AZ.....................  Winslow.................  INW                  
CA.....................  Arcata/Eureka...........  ACV                  
CA.....................  Bishop..................  BIH                  
CA.....................  Blythe..................  BLH                  
CA.....................  Daggett.................  DAG                  
CA.....................  Emigrant Gap............  BLU                  
CA.....................  Imperial................  IPL                  
CA.....................  Marysville..............  MYV                  
CA.....................  Merced..................  MCE                  
CA.....................  Paso Robles.............  PRB                  
CA.....................  Red Bluff...............  RBL                  
CO.....................  Akron...................  AKO                  
CO.....................  Alamosa.................  ALS                  
CO.....................  La Junta................  LHX                  
CO.....................  Limon...................  LIC                  
FL.....................  Crestview...............  CEW                  
GA.....................  Alma....................  AMG                  
GA.....................  Brunswick...............  SSI                  
IA.....................  Burlington..............  BRL                  
IA.....................  Mason City..............  MCW                  

[[Page 32891]]

                                                                        
IA.....................  Ottumwa.................  OTM                  
ID.....................  Burley..................  BYI                  
IN.....................  Valparaiso..............  VPZ                  
KS.....................  Chanute.................  CNU                  
KS.....................  Concordia...............  CNK                  
KS.....................  Dodge City..............  DDC                  
KS.....................  Emporia.................  EMP                  
KS.....................  Garden City.............  GCK                  
KS.....................  Goodland................  GLD                  
KS.....................  Hill City...............  HLC                  
KS.....................  Manhattan...............  MHK                  
KS.....................  Russell.................  RSL                  
KY.....................  Bowling Green...........  BWG                  
KY.....................  Jackson.................  JKL                  
KY.....................  London..................  LOZ                  
KY.....................  Paducah.................  PAH                  
MD.....................  Salisbury...............  SBY                  
ME.....................  Augusta.................  AUG                  
ME.....................  Caribou.................  CAR                  
ME.....................  Houlton.................  HUL                  
MI.....................  Alpena..................  APN                  
MI.....................  Hancock.................  CMX                  
MI.....................  Houghton Lake...........  HTL                  
MI.....................  Pellston................  PLN                  
MN.....................  Alexandria..............  AXN                  
MN.....................  Hibbing.................  HIB                  
MN.....................  International Falls.....  INL                  
MN.....................  Redwood Falls...........  RWF                  
MN.....................  St Cloud................  STC                  
MO.....................  Cape Girardeau..........  CGI                  
MO.....................  Rolla/Vichy.............  VIH                  
MO.....................  St Charles..............  3SZ                  
MS.....................  McComb..................  MCB                  
MS.....................  Tupelo..................  TUP                  
MT.....................  Bozeman.................  BZN                  
MT.....................  Butte...................  BTM                  
MT.....................  Glasgow.................  GGW                  
MT.....................  Havre...................  HVR                  
MT.....................  Kalispell...............  FCA                  
MT.....................  Livingston..............  LVM                  
MT.....................  Miles City..............  MLS                  
NC.....................  Elizabeth City..........  ECG                  
NC.....................  Hatteras................  HSE                  
NC.....................  New Bern................  EWN                  
NC.....................  Rocky Mount.............  RWI                  
ND.....................  Dickinson...............  DIK                  
ND.....................  Jamestown...............  JMS                  
ND.....................  Williston...............  ISN                  
NE.....................  Alliance................  AIA                  
NE.....................  Chadron.................  CDR                  
NE.....................  McCook..................  MCK                  
NE.....................  Norfolk.................  OFK                  
NE.....................  North Platte............  LBF                  
NE.....................  Scottsbluff.............  BFF                  
NE.....................  Sidney..................  SNY                  
NE.....................  Valentine...............  VTN                  
NH.....................  Concord.................  CON                  
NJ.....................  Millville...............  MIV                  
NM.....................  Carlsbad................  CNM                  
NM.....................  Clayton.................  CAO                  
NM.....................  Deming..................  DMN                  
NM.....................  Gallup..................  GUP                  
NM.....................  Las Vegas...............  LVS                  
NM.....................  Truth Or Consequences...  TCS                  
NM.....................  Tucumcari...............  TCC                  
NV.....................  Ely.....................  ELY                  
NV.....................  Lovelock................  LOL                  
NV.....................  Mercury.................  DRA                  
NV.....................  Tonopah.................  TPH                  
NV.....................  Winnemucca..............  WMC                  
NY.....................  Glens Falls.............  GFL                  
NY.....................  Massena.................  MSS                  
NY.....................  Monticello..............  MSV                  
NY.....................  Watertown...............  ART                  
OH.....................  Akron...................  AKR                  
OH.....................  Zanesville..............  ZZV                  
OK.....................  Gage....................  GAG                  
OK.....................  Hobart..................  HBR                  
OK.....................  Mc Alester..............  MLC                  
OK.....................  Ponca City..............  PNC                  
OR.....................  Astoria.................  AST                  
OR.....................  Baker City..............  BKE                  
OR.....................  Burns...................  BNO                  
OR.....................  The Dalles..............  DLS                  
PA.....................  Altoona.................  AOO                  
PA.....................  Johnstown...............  JST                  
SC.....................  Anderson................  AND                  
SD.....................  Huron...................  HON                  
SD.....................  Pierre..................  PIR                  
SD.....................  Watertown...............  ATY                  
TN.....................  Crossville..............  CSV                  
TN.....................  Jackson.................  MKL                  
TX.....................  Alice...................  ALI                  
TX.....................  Childress...............  CDS                  
TX.....................  Cotulla.................  COT                  
TX.....................  Dalhart.................  DHT                  
TX.....................  Del Rio.................  DRT                  
TX.....................  Galveston...............  GLS                  
TX.....................  Lufkin..................  LFK                  
TX.....................  Mineral Wells...........  MWL                  
TX.....................  Victoria................  VCT                  
TX.....................  Wichita Falls...........  SPS                  
TX.....................  Wink....................  INK                  
UT.....................  Bryce Canyon............  BCE                  
UT.....................  Cedar City..............  CDC                  
UT.....................  Milford.................  MLF                  
VA.....................  Danville................  DAN                  
VA.....................  Wallops.................  WAL                  
VT.....................  Barre/Montpelier........  MPV                  
WA.....................  Ephrata.................  EPH                  
WA.....................  Hoquiam.................  HQM                  
WA.....................  Quillayute..............  UIL                  
WI.....................  Lone Rock...............  LNR                  
WI.....................  Wausau..................  AUW                  
WV.....................  Beckley.................  BKW                  
WV.....................  Bluefield...............  BLF                  
WV.....................  Elkins..................  EKN                  
WV.....................  Martinsburg.............  MRB                  
WY.....................  Laramie.................  LAR                  
WY.....................  Riverton................  RIW                  
WY.....................  Sheridan................  SHR                  
WY.....................  Worland.................  WRL                  
                                                                        


    Dated: June 19, 1996.
Neil R. Planzer,
Program Director for Air Traffic Plans and Requirements.
[FR Doc. 96-16046 Filed 6-24-96; 8:45 am]
BILLING CODE 4910-13-M