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DCA22LA038

2021-11-29 · Miami, Florida, United States · None · 1 aircraft · Status: Completed

Airport KMIA

Current FAA registration · N705CK

Make / Model
BOEING 747-4B5F
Year of manufacture
2001 · 20 years old at event
Engine
P & W PW4056
Seats / Engines
490 seats · 4 engines
Last airworthiness date
20170825
ADS-B equipped
Yes — Mode-S A9675D

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Probable cause & findings

Incorrect lubrication of the foreflap fitting assembly.

Factual narrative

The flight crew reported that upon arrival at KMIA, another flight reported seeing something fly off their airplane. Post-flight inspection revealed damage to the right-hand inboard flaps, fuselage and right horizontal stabilizer. Upon lowering flaps, a section of the trailing edge flap was also missing. Examination of the damaged components revealed that the right inboard foreflap fitting assembly had not been lubricated in accordance with a manufacturer’s service bulletin. Source: NTSB Aviation Accident Database Retrieved: 2026-02-12

NTSB Findings

FAA avdata. C = Cause, F = Factor.

  • — Aircraft-Aircraft structures-Wing structure-Leading edge devices-Incorrect service/maintenance

Verbatim from NTSB's published report. Source file NTSB_2021_DCA22LA038.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

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