AD 93-08-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Division | PW4152 | PRATT & WHITNEY Model PW4152, PW4156, and PW4158 Engines |
| engine | Pratt & Whitney Division | PW4156 | PRATT & WHITNEY Model PW4152, PW4156, and PW4158 Engines |
| engine | Pratt & Whitney Division | PW4158 | PRATT & WHITNEY Model PW4152, PW4156, and PW4158 Engines |
Unsafe Condition
High pressure compressor failure caused by excessive blade tip to airseal interference, which can result in total loss of engine thrust.
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Required Actions
Switch ENGINE ANTI ICE to 'ON' before takeoff and maintain it 'ON' for flight operations below 15,000 feet. Install placards in the cockpit of Airbus A310-300 and A300-600 aircraft above the Captain and First Officer Primary Flight Displays with specified text. Alternative methods may be approved by the Manager, Engine Certification Office.
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Compliance Time
within 30 days after the effective date of this airworthiness directive (July 6, 1993), unless accomplished previously
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Affected Aircraft
Pratt & Whitney Model PW4152, PW4156, and PW4158 engines equipped with EEC Part Numbers 50D436, 50D791, 50D824, 51D037, and 51D053, installed on Airbus A310 and Airbus A300 series aircraft.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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