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ASN Wikibase Occurrence # 189389
Last updated: 30 June 2020
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Type:Silhouette image of generic PA34 model; specific model in this crash may look slightly different
Piper PA-34-200 Seneca I
Owner/operator:American Flight Training LLC
Registration: N16499
C/n / msn: 34-7350132
Fatalities:Fatalities: 0 / Occupants: 2
Other fatalities:0
Aircraft damage: Substantial
Location:Everglades, Broward County, FL -   United States of America
Phase: En route
Departure airport:Hollywood, FL (KHWO)
Destination airport:Hollywood, FL (KHWO)
Investigating agency: NTSB
During an instructional flight in a multiengine airplane, the pilot receiving instruction had just completed a right turn at an altitude of 3,300 ft mean sea level when the flight instructor heard a loud noise and saw something separate from the right engine. The flight instructor took the controls but was unable to maintain altitude with one engine operating and performed a forced landing into a swamp. Examination of the wreckage revealed that the right engine had separated from its mounts, one propeller blade was missing, and the right propeller hub was fractured. Metallurgical examination of the propeller hub revealed a fatigue fracture along a grease-fitting hole. An airworthiness directive had been issued about 8 years before the accident that required initial (within 50 flight hours) and repetitive (every 100 flight hours) eddy current inspection of the area around the lubrication holes of the propeller hub blade sockets. The right propeller had been overhauled about 14 months before the accident and had accrued about 440 hours at the time of the accident. The airplane's most recent 100-hour inspection (which included inspection of both propellers) occurred about 3 months before the accident. Review of maintenance records did not reveal any documentation that the airworthiness directive was complied with on the overhauled right propeller hub.

Probable Cause: Maintenance personnelís failure to comply with an airworthiness directive for the propeller, which resulted in a propeller hub failure due to fatigue.


FAA register:

Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 2 years and 7 months
Download report: Final report


Photo: FAA

Revision history:

20-Aug-2016 00:13 Geno Added
20-Aug-2016 11:52 Aerossurance Updated [Time, Phase, Damage, Narrative]
22-Mar-2019 19:08 ASN Update Bot Updated [Time, Operator, Departure airport, Destination airport, Source, Damage, Narrative, Accident report, ]
22-Mar-2019 20:19 harro Updated [Operator, Departure airport, Destination airport, Source, Narrative, Photo]

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