AD 71-17-02

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AD Number:
71-17-02
Document Type:
AD Final Rules
Docket Number:
Unknown
Subject Heading:
BOEING Model 747 Series Airplanes
Subject:
Body Gear Steering
Status:
Current
Citation:
This information is not available.
Citation Publish Date:
Effective Date:
08/17/1971
Make:
The Boeing Company
Model:
747-100 Series | 747-100B Series | 747-100B SUD Series | 747-200B Series | 747-200C Series | 747-200...Show more
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Superseded AD: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Superseded By: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: 71-17-02
CITATION:   This information is not available.

PAGE NUMBER:  

DOCKET NUMBER:   Unknown

AMENDMENT:   39-1268

AD NUMBER:   71-17-02

SUBJECT HEADING:   BOEING Model 747 Series Airplanes

ACTION:  

SUMMARY:  

DATES:   Effective August 17, 1971.

ADDRESSES:  

FOR FURTHER INFORMATION CONTACT:  

SUPPLEMENTARY INFORMATION:  

REGULATORY TEXT:  
71-17-02 BOEING: Amendment 39-1268. Applies to Boeing Model 747 Series airplanes certificated in all categories.

Compliance required as indicated.
To prevent body gear steer input on takeoff or landing, accomplish the following:

a. Within 100 hours' time in service after the effective date of this AD, unless already accomplished amend the Boeing B-747 Airplane Flight Manual, Certificate Limitations Section (used by each operator) by incorporating the following:

"MISCELLANEOUS
BODY GEAR STEERING. When aligned with the runway for takeoff and prior to advancing thrust levers, deactivate the body gear steering and leave deactivated until reaching taxi speed after landing, or refused takeoff."

As an interim acceptable procedure, deactivation of the body gear steering may be accomplished by disarming the circuit breaker identified on the circuit breaker panel as "Body Gear Steering Arm and Ind".

b. On or before January 1, 1972, unless already accomplished, install manually operated body gear steering arm/disarm switch per Boeing Service Bulletin 32-2113, dated July 23, 1971, or later FAA approved revision, or an equivalent installation approved by the Chief, Aircraft Engineering Division, FAA Western Region. Upon accomplishment of this installation, discontinue use of the circuit breaker to disarm the body gear per (a) above. The Airplane Flight Manual amendment per (a) above continues in full force and effect.

This amendment becomes effective August 17, 1971.

FOOTER: