AD 90-07-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
Unsafe Condition
Separation of an inboard trailing edge flap due to corrosion or cracking of the inboard track.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect for cracks and corrosion in the inboard trailing edge flaps inboard track using visual or magnetic particle methods per Boeing Service Bulletin 727-57-0178. Repair or replace flap tracks based on inspection results, retorque loose mounting bolts, and perform recurring inspections at intervals not to exceed 3,000 flight cycles or 18 months, whichever occurs first.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to (1) the accumulation of 7,000 flight cycles or 5 years since manufacture, whichever occurs first; or (2) within the next 1,000 flight cycles or 6 months after the effective date of this AD, whichever occurs first, whichever occurs later.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
All Model 727 series airplanes, certificated in any category.
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.