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14910-13-PJ. 

### DEPARTMENT OF TRANSPORTATION <OAAC"" flThG S\'MDOL 

### Federal Aviation Administr"ation 

# ANM ... -'1 

### ~= 14 CFR Part 39 

# 07--J...b 

# r;.~ [Docket No. FAA-2010-++++; Directorate identifier 2010-NM-034-ADj Amendment 

# "J/S/t 0 

## Ib,J.

# ''P. ~,m,oo, 39-**;-A1J 

# (yblOID-Oh-/3 

# AN1" -\\~ RlN 212Q-AA64 ~ 

### Ainvortbiness Directives; LeaIjet Inc. Model 45 Airplanes 

# :3... 5 -111 JIlNG SVIolIlOL 

### AGENCY: Federal Aviation Administration (FAA), DOT. 

# ANn -[bL n""-"SIG 

### ACTION: Final rule; request for comments. SUMMARY: We are adopting a new amvorthlless directive (AD) for certain Model 45

# -~ airplanes. This AD requires a general visual mspection for cracked and missing bal1Sere\';I'rJ/J.~ assembly sleeves ofthe flap actuator, repetltlve 

### non-destructive liqUIdpenetrant 

# o:~. inspections of each sleeve or flap actuator for cracks, and replacement or modification of T

# 3/'llt-o
UT'I"G SyMML the flap actuator 

### ifnecessary. This AD results from reports of cracked and mis~ing ballscrew assembly slecves of the flap actuators. We are issuing this AD to detect and correct cracked and missing sleeves, which could cause loss of the load-carrying ball

. b th fl I·· 11 d I f I flJTlNG'YMllOL beanngs on 0 actuators on one ap, resu tlOg m 'ap asymmetry an oss 0 contra 0 the airplane. 

### DATES: This AD is effective [INSERT DATE 15 DAYS AFTER DATE OF PUBLICATION IN THE FEDERAL REGISTER]. ItoTI"GSYM90L The Director of the Federal Register approved the incorporation by reference of certain publications listed in the AD as of[lNSERT DATE 15 DA YS AFTER DATE OF\'l'E 

### PUBLICATION IN THE FEDERAL REG1STER]. We must receive comments on this AD by [INSERT DATE 45 DAYS AFTER 

### DATE OF PUBLICA nON IN THE FEDERAL REGISTER]. ADDRESSES: You may send comments 

### by any of the following methods:Federal Aviation Administration 

### DEPARTMENT OF TRA;'1SPORTATION ';0""-""""""." ') [4910-13-PI,

# '·"""~L':J "'"fJj=-_'.!T;~ .(

~~ 

# I

# niXJfl 14CFR Part 39 

# k4J'
-

# iU. IDocket No. FAA-2010-++++j Directorate Identifier 2010-NM-034-ADj Amcndme ~~~ /-,.: ";-7 h;;:. U 39-**; AD **1 RL"J2120-:'\:\64

ACTION: Final rule; reqi)est 

### tor comments. AGENCY: Federal Aviation Administration (FAA), DOT. 

# ,L~;::tM "~-S({; 

# lITlZUP) SUi\fl\-tARY: We are adopting anew alrworthiness directive (AD) for certain Model 4 

# ~~::f 

# 'r,~-ur, If.. Nt~.

_ airplanes. This AD requires ageneral visual inspection ofthe ballscrew assembly ofth cp 

### !J 13~l'-1t. flap actuator for cracked and missing]:lallscrew assembly sleeves, repetitive 

# IU'".'" non-destructive liquid penetrant inspections ofeach assembly sleeve of the flap actuato 1~'11·.'

# ~# forcracks, and replacement or modification of the flap actuator if necessary. This AD ll-'lli 3 -';0 C>, , results from reports ofcracked and missing bal1screw assembly sleeves ofthe flap .'
- 

# 'YU actuators. We are issuing this AD to detect and correct cracked and missing sleeves, ~ ~MI: which could cause loss ofthe load-carrying ball bearings on both actuators on one flap'D 

# IS/to resulting in flap aSymmetry and loss ofcontrol ofthe airplane. 

# I "ouw';(' .-G:1

_ 

### :~:~~A~::~~S;::;::~:::R:E:::~ DAYSAFTERDATEOFF The Director ofthe Federal Register approved the incorporation by reference 0 _nr..;.~ Ain','ortbiness Directives; Learjet Inc. Model 45 Airplanes

certain publications listed inthe AD as of [INSERT DATE 15 DAYS AFTER DATE ( 

### p'T~:::-'-"",-- PUBLICATIONL'ITHEFEDERALREGISTER]. We must receive comments on this AD by [INSERT DATE 45 DAYS AFTER 

# ~."~""",""3",U'O-=-- DATEOFPUBLICATIONINTHEFEDERALREGISTER]. ADDRESSES: You may send comments by any of the following methods:

FAA Form 1360-14.1 (6--S9) OFFICIALFilE COPY