Pilot Debrief

BEECH 95-C55 near Delta, CO — 2017-01-18

Final reportCEN17LA091
Sign in to save
Date
2017-01-18
Location
Delta, CO, USA
Airport
AJZ
Aircraft
BEECH 95-C55
Registration
N303QB
Category
Airplane
Highest injury
None
Fatalities
0
Phase of flight
Landing

Probable cause

The failure of the landing gear to extend during landing approach due to the interference between the landing gear motor's sector and worm gears.

NTSB narrative

The airplane experienced a gear-up landing after the private pilot was unable to extend the landing gear. Postaccident examination of the landing gear motor revealed that the sector gear teeth were partially sheared and were bound with the worm gear teeth, resulting in interference. Once the gear was turned past the sheared area, the assembly functioned with no anomalies. Review of maintenance logs revealed that the most recent annual inspection, which included the landing gear system, was completed about 6 months before the accident with no anomalies noted.

Analysis

Primary failure mode
Mechanical failure
First missed decision gate
Pilot could have opted for a go-around after gear failure indication.

NTSB coding

Evidence available

  • Photos
  • 5 docket documents
View NTSB final reportView NTSB docket

Docket documents5

Related mishaps