AD 89-21-04 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 767-200 Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300 Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
| aircraft | The Boeing Company | 767-300F Series | Airworthiness Directives; BOEING Model 767 Series Airplanes |
Unsafe Condition
The potential for a thrust loss greater than the loss of one engine due to a lightning strike.
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Required Actions
Modify the engine electrical and electronic engine control wiring in accordance with Boeing Service Bulletin 767-71-0041, dated September 22, 1988; Revision 1, dated April 6, 1989; or Revision 2, dated June 29, 1989. An alternate means of compliance or adjustment of the compliance time may be used when approved by the Manager, Seattle Aircraft Certification Office.
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Compliance Time
within 15 months after the effective date of this AD
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Affected Aircraft
Model 767 series airplanes equipped with Pratt and Whitney JT9D series engines or General Electric CF6-80A series engines, specified in Boeing Service Bulletin 767-71-0041, dated September 22, 1988.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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