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19960502046019A

Accident · Substantial damage
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FAA accident report · Beech 1900D · Denver, CO · May 2, 1996

FAA Aviation Safety Information Portal

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Date
May 2, 1996 · 16:24 local
Place
Denver, CO
Airport
Denver International
Phase of flight
Roll-Out (Fixed Wing)
Operating rules
Air taxi and commuter (Part 135)
Operator
MASA
Damage
Substantial damage
Aircraft
N154ZV
NTSB investigation
NTSBFTW96FA198
Reported as
Beech 1900D
Reported engine
Pratt & Whitney PT6A67D
People aboard
11
Fatal injuries
0
Pilot’s flight hours
5,888 total3,490 in this make and model199 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(.4)After takeoff, the right main landing gear failed to retract. After review of procedures, the pilots elected to continue to their destination. On arrival, when the landing gear was selected to the down position, all landing gear indicated down and locked and the right main was visually verified by the captain. During landing roll, when passing through approximately 60 knots, the right main landing gear indication gave an intermittent unsafe indication. The pilot flying added power to go-around and the right main landing gear collapsed. The aircraft rolled/slid to a stop on the runway and an uneventful evacuation was conducted. Examination of the right main landing gear assembly provided evidence that the extension/retraction actuator had failed at the spherical bearing. Metallurgical examination found the spherical bearing had failed in fatigue and evidenced by wear and binding in certain positions. It was dry and there was no evidence of lubrication. A review of maintenance procedures and records for the aircraft revealed that all maintenance and inspections had been performed in accordance with applicable directives.

As the FAA filed it

(.4)AFTER TAKEOFF, THE RIGHT MAIN LANDING GEAR FAILED TO RETRACT. AFTER REVIEW OF PROCEDURES, THE PILOTS ELECTED TO CONTINUE TO THEIR DESTINATION. ON ARRIVAL, WHEN THE LANDING GEAR WAS SELECTED TO THE DOWN POSITION, ALL LANDING GEAR INDICATED DOWN AND LOCKED AND THE RIGHT MAIN WAS VISUALLY VERIFIED BY THE CAPTAIN. DURING LANDING ROLL, WHEN PASSING THROUGH APPROXIMATELY 60 KNOTS, THE RIGHT MAIN LANDING GEAR INDICATION GAVE AN INTERMITTENT UNSAFE INDICATION. THE PILOT FLYING ADDED POWER TO GO-AROUND AND THE RIGHT MAIN LANDING GEAR COLLAPSED. THE AIRCRAFT ROLLED/SLID TO A STOP ON THE RUNWAY AND AN UNEVENTFUL EVACUATION WAS CONDUCTED. EXAMINATION OF THE RIGHT MAIN LANDING GEAR ASSEMBLY PROVIDED EVIDENCE THAT THE EXTENSION/RETRACTION ACTUATOR HAD FAILED AT THE SPHERICAL BEARING. METALLURGICAL EXAMINATION FOUND THE SPHERICAL BEARING HAD FAILED IN FATIGUE AND EVIDENCED BY WEAR AND BINDING IN CERTAIN POSITIONS. IT WAS DRY AND THERE WAS NO EVIDENCE OF LUBRICATION. A REVIEW OF MAINTENANCE PROCEDURES AND RECORDS FOR THE AIRCRAFT REVEALED THAT ALL MAINTENANCE AND INSPECTIONS HAD BEEN PERFORMED IN ACCORDANCE WITH APPLICABLE DIRECTIVES.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

NTSB FTW96FA198Accident · No injuriesField investigationFinal reportDenver, COfatigue failure of the right main landing gear hydraulic actuator rod at the spherical bearing due to a lack of lubrication.May 2, 1996 · Substantial damage