ANC88IA013

NTSB incident investigation · Cessna 402B · Cordova, AK · October 26, 1987

Incident · No injuriesIncident investigationFinal report
Date
October 26, 1987, 18:45 local (22:45 UTC)
Place
Cordova, AK
Injuries
6 uninjured
Damage
Minor damage
Phase of flight
Landing
Aircraft
N5718MCessna 402B
Weather
Visual (VMC) · Dusk
Status
Completed · report July 10, 1989
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19871026073559I
Case key
4962

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.

Main gear collapsedLanding - roll
Landing gear,main gear strut scissors - disconnectedCause
Gear pin - improperCompany maintenance personnelCause
Acft/equip,inadequate compliance determinationOther maintenance personnelCause
Inadeq substantiation process,inadeq documentationOther institutionFactor
Operation with known deficiencies in equipment - attemptedPilot in commandFactor

Analysis

The company maintenance personnel were aware of a shimmy problem but they thought is was only worn bushings. The maintenance people stated they inspected the part but found no problem. The pilot-in-command also stated he found no problem upon visually inspecting the assembly just prior to the incident. The records do not indicate a landing gear change, however, the wrong part was installed as outlined in the parts manual. Furthermore, an uncertificated assistant to the director of maintenance released the airplane without having a qualified mechanic inspect the gear. The pilot-in-command accepted the airplane with a known deficiency and did not enter the discrepancy until after the incident. The left main lndg gear collapsed during landing. The gear had 'wobbled' during taxi at anchorage. The plt and a baggage handler had inspected the gear and found nothing out of order. The plt telephoned co maintenance and the co gen mgr said the co was aware of the shimmy problem and to take the flt.

Aircraft

Registration
N5718M
Reported as
Cessna 402B
Category
Airplane
Serial number
402B00354
Airframe hours
2,128
Engine
Continental TSIO-520-E, 300 horsepower, reciprocating
Damage
Minor damage
Flight
Part 135
Registered owner
Wilburs Inc.
Airworthiness certificate
Standard, Utility; Standard, Normal
Last inspection
Annual · October 2, 1987 · 85 hours before
Departed
ANC · Anchorage, AK
Destination
CDV · Cordova, AK
Flight plan
IFR
Airport
CDV · Cordova, runway 9, 7,500 × 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
30
Certificates
Commercial, Flight instructor, Airline transport
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
1,982 total · 1,780 as pilot in command · 230 in the last 90 days

Weather

Conditions
Visual (VMC) · Dusk
Wind
10° at 6 knots
Visibility
10 statute miles
Lowest ceiling
4,000 ft overcast
Temperature
45 °F, dew point 30 °F
Altimeter
29.00 inHg
Observed at
CDV

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 N5718M · 3

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