AD 88-13-05

88-13-05 BOEING: Amendment 39-5948. Applies to Model 747 series airplanes, equipped with the autopilot/flight director which has the Landing Rollout Control Unit (LRCU), part number 60B00013-759, with the rollout function not installed or previously removed, certificated in any category.

Compliance is required as indicated, unless previously accomplished.

To prevent engine contact with the runway as a result of excessive airplane roll after touchdown, accomplish the following:

A. Within the next 15 days after the effective date of this AD, accomplish the following:

1. Incorporate the following into the Limitations Section of the Airplane Flight Manual (AFM). This may be accomplished by inserting a copy of this AD in the AFM: "Disconnect autopilot prior to 50 feet AGL during approach to land;" and,

2. Install a placard in plain view of both the Captain and First Officer, which reads as follows: "Disconnect autopilot prior to 50 feet AGL."

B. Reworkof the LRCU, P/N 60B00013-759, in accordance with the instructions contained in Boeing Service Bulletin 747-22-2166, dated March 17, 1988, constitutes terminating action for the requirements of paragraph A, above.

C. An alternate means of compliance or adjustment of compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Seattle Aircraft Certification Office, FAA, Northwest Mountain Region.

NOTE: The request should be forwarded through an FAA Principal Avionics Inspector (PAI), who may add any comments and then send it to the Seattle Aircraft Certification Office.

D. 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 the requirements of this AD.

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

This amendment, 39-5948, becomes effective July 11, 1988.