- Effective
- August 17, 1971
- Models
- 747-100 Series, 747-100B Series, 747-100B SUD Series, 747-200B Series, 747-200C Series, 747-200F Series and 6 more
- Data sheet
- TCDSA20WE
- Registered aircraft
- 63 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-1268
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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| FAA DRS HTML | 22 KB | 5e5b658d…bc8c6c6 | FAA DRS (API key needed) |
On this page
The airworthiness directive
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.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 63
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1969 | 1 |
|---|---|
| 1970 | 2 |
| 1971 | 1 |
| 1975 | 2 |
| 1976 | 1 |
| 1989 | 2 |
| 1990 | 4 |
| 1991 | 6 |
| 1992 | 2 |
| 1993 | 2 |
| 1994 | 3 |
| 1995 | 1 |
| 1997 | 4 |
| 1998 | 1 |
| 1999 | 4 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 3 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 3 |
| 2007 | 3 |
14 with no year recorded