ASN logo
ASN Wikibase Occurrence # 37302
Last updated: 20 October 2019
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:03-AUG-1991
Time:23:47
Type:Silhouette image of generic BE23 model; specific model in this crash may look slightly different
Beechcraft C23 Sundowner
Owner/operator:Groton Navy Flying Club
Registration: N9375S
C/n / msn: M1673
Fatalities:Fatalities: 3 / Occupants: 3
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Category:Accident
Location:Pleasantville, NJ -   United States of America
Phase: En route
Nature:Private
Departure airport:Atlantic City, NJ (AIY)
Destination airport:Farmingdale, NY (FRG)
Investigating agency: NTSB
Narrative:
THE PILOT EXPERIENCED A POWER LOSS SHORTLY AFTER TAKEOFF WHILE OPERATING OVER A RESIDENTIAL AREA AT NIGHT. THE AIRPLANE STRUCK A TELEPHONE POLE, AND CRASHED AND BURNED IN A STREET. RECORDS INDICATE THE ENGINE HAD A PROP STRIKE AT 1828 HRS, WAS OVERHAULED AT 2164 HRS, AND OVERHAULED AGAIN AT 3407 HRS. THE ACCIDENT OCCURRED AT 3486 HRS. NO RECORDS WERE AVAILABLE FOR THE FIRST OVERHAUL, HOWEVER WHEN EXAMINED AT THE 2ND OVERHAUL THE CRANKSHAFT WAS FOUND TO BE UNDERSIZED BY .003 INCH.. THE CRANKSHAFT HAD FAILED AT THE REAR OF THE NUMBER 3 CRANKPIN. METALLURGICAL EXAMINATION FOUND THE FRACTURE ORIGINATED SUBSURFACE IN AN AREA OF STRESS. NITRIDING RESIDUE WAS FOUND IN CRACKS WHICH HAD NOT BEEN DETECTED BY NONDESTRUCTIVE TESTING. THE FAA DOES NOT REQUIRE THE CERTIFICATION OF NONDESTRUCTIVE TESTING OPERATORS. CAUSE: A POWER LOSS DUE TO A FAILED CRANKSHAFT, WHILE OPERATING OVER UNSUITABLE TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE, THE NIGHT CONDITIONS, THE FAILURE OF MAINTENANCE PERSONNEL TO DETECT THE CRACKS USING MAGNAFLUX INSPECTIONS, THE LACK OF ADEQUATE PROCEDURES/DIRECTIONS ON DETECTION OF CRACKS, AND THE LACK OF QUALIFICATIONS/CERTIFICATION FOR OPERATORS CONDUCTING NONDESTRUCTIVE TESTING.

Sources:

NTSB: https://www.ntsb.gov/ntsb/brief.asp?ev_id=20001212X17943


Revision history:

Date/timeContributorUpdates
24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

Corrections or additions? ... Edit this accident description