AD 84-14-51 R1

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AD Number:
84-14-51 R1
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 757 Series Airplanes
Subject:
AFM Emergency Procedure - Gear Lever
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
11/12/1985
Make:
The Boeing Company
Model:
757-200 Series | 757-200CB Series | 757-200PF Series | 757-300 Series
Product Type:
Aircraft
Product Subtype:
Large Airplane
Affected AD:
Superseded AD:
Affected By:
Superseded By:
Service/Office:
Office of Primary Responsibility:
CFR Part Reference:
Part 39
Comments:
AIRWORTHINESS DIRECTIVES FINAL RULES: 84-14-51 R1
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-5149

AD NUMBER:   84-14-51 R1

SUBJECT HEADING:   BOEING Model 757 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective November 12, 1985.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
84-14-51 R1 BOEING: Amendment 39-5149. Applies to Model 757 airplanes listed in Boeing Service Bulletin 757-32-0033 dated September 7, 1984, certificated in any category, on which incorporation of Boeing Service Bulletin 757-32-0033, dated September 7, 1984, or later FAA- approved revision, has not been accomplished. Compliance is required as indicated below, after the effective date of this airworthiness directive (AD). To assure landing gear extension following a jam of the landing gear handle in the up position, accomplish the following, unless already accomplished:

A. Within 24 hours:

1. Incorporate the following information into the FAA-approved airplane flight manual and the flight operations manual as an emergency procedure and provide to flight crews:

GEAR LEVER WILL NOT MOVE FROM UP POSITION
AIRSPEED......................................................................... MAINTAIN 200-220 KTS
UNTIL GEAR EXTENDED
FLAP LEVER..................................................................... ................1
PTU CONT CIRCUIT BREAKER (D31).................................... PULL
LEFT AUTOPILOT (IF ENGAGED)............................................DISCONNECT
LEFT ELECTRIC AND ENGINE
HYDRAULIC PUMP SWITCHES................................OFF
ALTERNATE GEAR EXTENSION SWITCH..........................PUSH
If, after 60 seconds, any gear down
(green) lights not illuminated:
FLAP LEVER..................................................................... 5/1
Select flaps 5 then 1.
Repeat until all gear down (green)
lights illuminate.
- Use flaps 20 and VREF 20 for landing.
- L thrust reverser and nose wheel steering
inoperative
GROUND PROXIMITY FLAPS OVERRIDE SWITCH........ OVRD
ALTERNATE FLAPS SELECTOR.............................................SET
Position to agree with flap lever.
ALTERNATE FLAPS SWITCHES
(Leading and Trailing Edge)........................................ ALTN
ALTERNATE FLAPS SELECTOR.............................................SET
Extend or Retract Flaps as required.

CAUTION: DO NOT REPRESSURIZE LEFT
HYDRAULIC SYSTEM OR RESET PTU
CONT CIRCUIT BREAKER INFLIGHT
OR ON THE GROUND, AS GEAR WILL
RETRACT.

NOTE: Compliance with this directive may be effected by including a copy of telegraphic AD T84-14-51, issued June 29, 1984, in the airplane flight manual and operating manual.

2. Further revenue flight following landing gear jam is prohibited until repairs are made.

3. Alternate means of compliance which provide an equivalent level of safety may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

4. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of inspections and/or modifications required by this AD.

B. Prior to September 1, 1986:

1. Modify the landing gear selector valve assembly, Boeing P/N 60B00216-7, in accordance with Boeing Service Bulletin 757-32-0033, dated September 7, 1984, or later FAA- approved revision.

2. Following modification of the selector valve, the special emergency procedure implemented by paragraph A., above, may be removed.

All persons affected by this directive who have not already received these documents from the manufacturer may obtain copies upon request to the Boeing Commercial Airplane Company, P.O. Box 3707, Seattle, Washington 98124. These documents may be examined at the FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or at the Seattle Aircraft Certification Office, 9010 East Marginal Way South, Seattle, Washington.

The telegraphic AD issued June 29, 1984, became effective upon receipt.
This amendment becomes effective November 12, 1985.

FOOTER: