AD 79-26-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 737-200 Series | BOEING Model 737-200 Airplanes |
Unsafe Condition
GPWS flap position switches sensing less than 30 degrees as landing flaps could fail to provide proper warning during landing configurations, increasing the risk of controlled flight into terrain.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the ground proximity warning system (GPWS) flap position switch to sense flaps 30 and 40 degrees as landing positions and install a flap override switch for landings requiring flap positions of 25 degrees or less.
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Compliance Time
within the next 1,200 hours time-in-service or six (6) months, whichever comes first, after the effective date of this AD
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Affected Aircraft
Boeing Model 737-200 (advanced) airplanes with GPWS flap position switches sensing less than 30 degrees as landing flaps, certificated in all categories
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
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