**Use of declared distance needed to properly comply with OpSpec C084**

Declared distances are a means of obtaining a standard safety area by
reducing the usable runway length. A mathematical method is used to
determine runway length available. Declared distance standards are
contained in AC 150/5300-13.

Declared distances for takeoff and landing are not provided on airport
diagrams.

Stored runway data in the FMS NAV database does not include declared
distances

Potential errors include applying the incorrect runway distance
information when using AFM or QRH data. The FMS applies incorrect runway
data when calculating aircraft performance.

Result is over-weight operations in violation of FAR 121.189, FAR
135.379, or FAR 91.601. Airport design criteria, as specified in AC
150/1500-13, are not achieved which presents a clear safety hazard.

Recommend publishing declared distances on airport charts and apply the
most restrictive declared distance in accordance with the aircraft
certification basis and applicable operating rules.

**Standard Braking Action Taxonomies needed**

+------+----------------+--------------+---------------+-------------+
| **   | **Good**       | **F          | **Poor**      | **Nil**     |
| Auth |                | air/Medium** |               |             |
| or** |                |              |               |             |
+------+----------------+--------------+---------------+-------------+
| Prop | More braking   | Noticeably   | Very degraded | No braking  |
| osed | capability is  | degraded     | braking       | action and  |
| FAA  | available than | braking      | conditions    | poor        |
| des  | is used in     | conditions.  | with a        | directional |
| crip | typical        | Expect and   | potential for | control can |
| tion | deceleration   | plan for a   | hydroplaning. | be          |
|      | on a           | longer       | Expect and    | expected.   |
|      | non-limiting   | stopping     | plan for a    |             |
|      | runway (i.e.,  | distance     | significantly |             |
|      | a runway with  | such as      | longer        |             |
|      | excess         | might be     | stopping      |             |
|      | stopping       | expected on  | distance such |             |
|      | distance       | a packed or  | as might be   |             |
|      | available).    | compacted    | expected on   |             |
|      | However, the   | snow-covered | an            |             |
|      | landing        | runway.      | ice-covered   |             |
|      | distance will  |              | runway.       |             |
|      | be longer than |              |               |             |
|      | the certified  |              |               |             |
|      | (unfactored)   |              |               |             |
|      | dry runway     |              |               |             |
|      | landing        |              |               |             |
|      | distance, even |              |               |             |
|      | with a well    |              |               |             |
|      | executed       |              |               |             |
|      | landing and    |              |               |             |
|      | maximum effort |              |               |             |
|      | braking.       |              |               |             |
+------+----------------+--------------+---------------+-------------+
| de   | No periods in  | Occasional   | Intermittent  | Continuous  |
| Groh | which the      | periods in   | periods in    | period in   |
|      | anti-skid      | which the    | which the     | which the   |
|      | limit reached. | anti-skid    | anti-skid     | anti-skid   |
|      |                | limit is     | limit is      | limit is    |
|      | Able to easily | reached.     | reached.      | reached.    |
|      | exit the       |              |               |             |
|      | runway at the  | Able to exit | Able to exit  | Unable to   |
|      | planned runway | the runway   | the runway at | exit the    |
|      | exit using     | at the       | the planned   | runway at   |
|      | normal to      | planned      | runway exit   | the planned |
|      | slightly       | runway exit  | only by using | runway exit |
|      | higher brake   | using strong | maximum       | despite     |
|      | pedal pressure | brake pedal  | manual brake  | using       |
|      | (normal thrust | pressure     | pedal         | maximum     |
|      | reverse if     | (normal      | pressure and  | manual      |
|      | thrust reverse | thrust       | full thrust   | braking and |
|      | is used).      | reverse if   | reverse.      | full thrust |
|      |                | thrust       |               | reverse.    |
|      | Normal         | reverse is   | Deceleration  |             |
|      | deceleration   | used).       | significantly | The sense   |
|      | felt using     |              | degraded      | of very     |
|      | normal to      | Degraded     | using maximum | little or   |
|      | slightly       | deceleration | manual brake  | no          |
|      | higher brake   | using strong | pedal         | d           |
|      | pedal pressure | brake pedal  | pressure.     | eceleration |
|      | despite the    | pressure.    |               | despite use |
|      | runway not     |              | Degraded      | of maximum  |
|      | being dry.     | No           | directional   | manual      |
|      |                | directional  | control that  | braking or  |
|      | No directional | control      | doesn't       | if this is  |
|      | control        | problems.    | require       | experienced |
|      | problems.      |              | discontinuing | coming out  |
|      |                |              | the use of    | of thrust   |
|      |                |              | thrust        | reverse     |
|      |                |              | reverse.      | (i.e. any   |
|      |                |              |               | d           |
|      |                |              |               | eceleration |
|      |                |              |               | felt was    |
|      |                |              |               | due to the  |
|      |                |              |               | thrust      |
|      |                |              |               | reverse     |
|      |                |              |               | only).      |
|      |                |              |               |             |
|      |                |              |               | Degraded    |
|      |                |              |               | directional |
|      |                |              |               | control to  |
|      |                |              |               | the extent  |
|      |                |              |               | that thrust |
|      |                |              |               | reverse     |
|      |                |              |               | must be     |
|      |                |              |               | di          |
|      |                |              |               | scontinued. |
|      |                |              |               |             |
|      |                |              |               | Stopping    |
|      |                |              |               | with only   |
|      |                |              |               | 10% runway  |
|      |                |              |               | remaining   |
|      |                |              |               | after using |
|      |                |              |               | maximum     |
|      |                |              |               | manual      |
|      |                |              |               | braking and |
|      |                |              |               | full thrust |
|      |                |              |               | reverse.    |
+------+----------------+--------------+---------------+-------------+
|      |                |              |               |             |
+------+----------------+--------------+---------------+-------------+

Occasional -- less than 1/3 of the time

Intermittent -- 1/3 to 2/3 of the time

Continuous -- More than 2/3 of the time.

Did I get everything out of the brake system that I demanded?

What "indicators" or "flags" do you use to choose a particular braking
action term?

[Please add the indicators you use for each braking action term in the
table above.]{.underline}

**Standardized Runway Surface Condition (RSC) Reports**

Items I think that all reports should have, include:

Runway number

Time of the observation / measurement

The type and depth of contaminate for each third of the runway.

The MU values for each third of the runway

Braking action reports, if available.

The time of the last runway treatment and the width and length of runway
treated

The time of the planned next runway treatment

Is this list acceptable or do you have a desire for some additional
information? Remember, keep it simple and concise; only what you
[need]{.underline} because this list must lend itself to be incorporated
into a standardized report format.

**Dissemination of RSC Reports**

I think a standard RSC report should be coded (and I know we don't like
more coded info, however that lends itself to a more compact ATIS) and
appended to the ATIS broadcast, at a minimum. During active
precipitation events the reports should be made every 15 minutes, even
if it's only an update assessment of the contaminate type and depth (the
airport may not have the opportunity to run friction devices or plows
that often)

How [often]{.underline} do you think the standard RSC report should be
given?

How should the RSC report be given? Via ATIS or ATC or both or other
means?