DEN84IA157

NTSB incident investigation · Swearingen SA226TC · Albuquerque, NM · May 24, 1984

Incident · No injuriesIncident investigationFinal report
Date
May 24, 1984, 08:00 local (14:00 UTC)
Place
Albuquerque, NM
Injuries
19 uninjured
Damage
Minor damage
Phase of flight
Approach
Aircraft
N237AMSwearingen SA226TC
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
FAA report
19840524038659I
Case key
16272

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.

On this page

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Airframe/component/system failure/malfunctionApproach
Door,landing gear - foreign objectCause
Maintenance - improperCompany maintenance personnelCause
ComplacencyCompany maintenance personnelFactor
Door,landing gear - jammedCause
Gear extension - not possible
In flight collision with terrain/waterLanding - flare/touchdown
Wheels up landing

Analysis

When gear was lowered for landing rt main gear would not extend although persons on the ground stated the gear doors appeared open. Remedial action by the flt crew did not rectify the situation and a gear up landing was performed. When acft was raised from rwy and rt main gear doors forced open, a mechanics tool, called an awl, fell out of wheel well. Examination of marks on the awl and in the wheel well indicated the awl became lodged btw the keelson web and the door hinge. This would have blocked the doors from opening past the half way position thus preventing gear extension. A mechanic had performed a routine gear inspection using an awl to align some screw holes on the evening preceeding the incident.

Aircraft

Registration
N237AM
Reported as
Swearingen SA226TC
Category
Airplane
Serial number
TC 332
Airframe hours
8,310
Engine
Airesearch TPE-331, 940 horsepower, turbo prop
Damage
Minor damage
Flight
Part 135
Operator
Air Midwest Airlines, Inc.
Registered owner
Air Midwest Airlines, Inc.
Airworthiness certificate
Standard, Normal; Standard, Transport
Last inspection
AAIP · May 23, 1984 · 238 hours before
Departed
ROW · Roswell, NM
Destination
ABQ · Albuquerque, NM
Flight plan
VFR
Airport
ABQ · Albuquerque Int'L Arpt., runway 35, 8,993 × 200 ft, asphalt

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
31
Certificate
Airline transport
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
6,870 total · 4,300 in this make and model · 6,520 as pilot in command · 245 in the last 90 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
190° at 7 knots
Visibility
20 statute miles
Lowest ceiling
25,000 ft overcast
Temperature
72 °F, dew point 59 °F
Altimeter
30.00 inHg
Observed at
ABQ

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N237AM · 2

Matched to the same aircraft by N-number and date.