MKC82FA149

NTSB accident investigation · Swearingen SA226TC · Kansas City, MO · August 20, 1982

Accident · No injuriesField investigationFinal report
Date
August 20, 1982, 14:43 local (19:43 UTC)
Place
Kansas City, MO
Injuries
12 uninjured
Damage
Substantial damage
Phase of flight
Approach
Aircraft
N237AMSwearingen SA226TC
Weather
Visual (VMC) · Day
Status
Completed · report August 20, 1983
Report
Approved by Office Director
Safety recommendations
Yes
FAA report
19820820040429A
Case key
71224

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

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
Landing gear,normal retraction/extension assembly - jammedCause
Landing gear,main gear - movement restrictedCause
Door,landing gear - assemblyCause
Door,landing gear - looseCause
Door,landing gear - disconnectedCause
Maintenance,replacement - not performedCompany maintenance personnelCause
Acft/equip,inadequate airframeManufacturerFactor
In flight collision with terrain/waterLanding - flare/touchdown
Gear extension - attemptedPilot in command
Information insufficientManufacturerFactor
Wheels up landing - performedPilot in command

Analysis

During the approach to topeka the crew was unable to extend the left gear. The crew diverted to Kansas City, and after many unsuccessful attempts to lower the left gear elected to land wheels-up. The left main gear was jammed into the geardoors. The aft hinge bolt was missing from the left inboard gear door, allowing the gear door to shift just enough to jam the gear as it started to extend. 17 days prior to the accident the loose aft hinge was noted during preflight. Company maintenance was unable to retorque the bolt due to the nutplate attachment rivets being stripped. This item was being carried as a delayed discrepancy. These parts can only be lubricated before installation. The entire assembly is almost impossible to inspect, remove, lubricate, install, torque & safety replacement of the nutplate is considered a major undertaking the manfacturer stated that "short cycling" the gear as many as 18 times would eventually break open the gear doors. This emergency method of extending the gear had not been disseminated to all operators.

Aircraft

Registration
N237AM
Reported as
Swearingen SA226TC
Category
Airplane
Serial number
TC332
Airframe hours
4,840
Engine
Garrett TPE331, 940 horsepower, turbo prop
Damage
Substantial damage
Flight
Part 135
Operator
Air Midwest
Registered owner
Aviation Equipment Leasing, In
Departed
ITC · Wichita, KS
Destination
TOE · Topeka, KS
Flight plan
IFR
Airport
MKC · Downtown, runway 3, 5,052 × 150 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
45
Certificate
Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Flight hours
9,273 total · 3,456 in this make and model · 2,742 as pilot in command · 93 in the last 90 days · 3 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Visibility
6 statute miles
Altimeter
30.00 inHg

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.