AD 2001-09-10

final rule
Data completeness: 70%

Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes Equipped With Pratt & Whitney Model PW4400 Series Engines

AD Number
2001-09-10
Status
final_rule
Effective Date
Product Category
engine
Docket
Docket No. 2001-NM-115-AD
FR Citation
66 FR 21853

Applicability

TypeManufacturerModelDetails
aircraft McDonnell Douglas MD-11 Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes Equipped With Pratt & Whitney Model PW4400 Series Engines
engine Pratt & Whitney PW4400 Series Airworthiness Directives; McDonnell Douglas Model MD-11 Series Airplanes Equipped With Pratt & Whitney Model PW4400 Series Engines

Unsafe Condition

Pratt & Whitney Model PW4400 series engines with certain early-production fan blades (Phase 0/1, FB2B) do not produce the amount of thrust indicated in the AFM, leading to reduced acceleration and climb performance.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Revise the Airplane Flight Manual (AFM) to advise the flight crew of applicable operational limits and address the shortfall in thrust production for engines equipped with FB2B fan blades.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Required as indicated, unless accomplished previously.

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

All McDonnell Douglas Model MD-11 series airplanes equipped with Pratt & Whitney Model PW4400 series engines, 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 6, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for McDonnell Douglas MD-11

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