AD 2008-23-07
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | 737 | Airworthiness Directives; Boeing Model 737 Airplanes |
Unsafe Condition
Flightcrews have failed to recognize and react properly to the cabin altitude warning horn, which could result in incapacitation of the flightcrew due to hypoxia and consequent loss of airplane control.
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Required Actions
Revise the airplane flight manual (AFM) to include a new flightcrew briefing that must be done before the first flight of the day and following any change in flightcrew members. Advise the flightcrew of this additional briefing.
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Compliance Time
Within 120 days of the effective date (November 25, 2008).
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Affected Aircraft
All Boeing Model 737-100, -200, -200C, -300, -400, -500, -600, -700, -700C, -800, -900, and -900ER series airplanes, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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