AD 2011-03-14
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Boeing | Company Model 737-100 | Airworthiness Directives; The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes |
Unsafe Condition
Failure of the flightcrew to recognize and react properly to a valid cabin altitude warning horn, which could result in incapacitation of the flightcrew due to hypoxia (lack of oxygen in body), and consequent loss of control of the airplane.
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Required Actions
Install two warning level indicator lights on the P2-2 center instrument panel in the flight compartment for certain airplanes. Activate the cabin altitude warning and takeoff configuration warning lights for a certain other airplane. Revise the airplane flight manual to remove certain requirements included by previous AD actions. Require new pressure altitude limitations for certain airplanes. Advise the flightcrew of revised emergency procedures for cabin altitude warnings or rapid depressurization and revised cabin pressurization procedures for normal operations.
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Compliance Time
Within 36 months of the effective date
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Affected Aircraft
The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500 Series Airplanes.
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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