# NTSB ANC93LA090: Cessna 402, N222JA, Kivalina, AK, June 12, 1993

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 12, 1993, 14:10 local (22:10 UTC)
- Place: Kivalina, AK
- Coordinates: 67.729385, -164.549682 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=67.7294&lon=-164.5497&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report December 2, 1994
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 2358
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC93LA090
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/2358/pdf
- Page: https://openairdocs.org/ntsb/ANC93LA090

## Probable cause

THE FAILURE OF THE PIVOT LINK FOR THE DOWNLOCK MECHANISM AND THE IMPROPER RIGGING OF THE LANDING GEAR LOCKING MECHANISM BY COMPANY MAINTENANCE PERSONNEL.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Main gear collapsed, landing - roll
  - landing gear,gear locking mechanism - failure,total (cause)
  - maintenance,adjustment - improper, company maintenance personnel (cause)
- Dragged wing,rotor,pod,float or tail/skid, landing - roll

## Analysis

DURING THE LANDING ROLL THE PILOT STATED THE RIGHT WING SETTLED TO THE RUNWAY.  EXAMINATION OF THE AIRPLANE SHOWED THAT THE PIVOT LINK BETWEEN THE PUSH PULL TUBES AND THE OVER CENTER LINK ASSEMBLY FAILED.  ACCORDING TO THE REPAIR STATION EMPLOYED TO REPAIR THE AIRPLANE, THEY CHECKED THE LANDING GEAR SYSTEM RIGGING AND FOUND IT TO BE OUT OF TOLERANCE.

## Factual narrative

On June 12, 1993, at 1410 Alaska daylight time, a retractable gear, wheel equipped Cessna 402 airplane, N222JA, registered to and operated by Alaska Island Air of Anchorage, Alaska, experienced a right main gear collapse during the landing roll at Kivalina, Alaska.  The air taxi flight, operating under 14 CFR Part 135, departed Kotzebue and the destination was Kivalina.  A company flight plan was in effect and visual meteorological conditions prevailed.  The Airline Transport Certificated Pilot- in-Command, the sole occupant, was not injured and the airplane received substantial damage.

According to the Pilot-in-Command, the landing was normal and during the rollout when the airplane slowed to 40 knots, the right wing settled to the runway.

Examination of the airplane showed that the pivot link, which is the link between the push pull tubes and the over center link assembly, had failed.  According to the Certificate Repair Station employed to repair the airplane, the landing gear system was out of rig.

The Company stated they submitted an NTSB Form 6120.1/2 to the FAA FSDO Office in Fairbanks.  The FSDO Office has no record of having received this form.

## Aircraft

- Registration: [N222JA](https://openairdocs.org/deregistered/N222JA-1997-06-06), registration cancelled 1997-06-06, S/N 4020151 (OpenAirDocs)
- Reported make and model: CESSNA 402
- Registry model: [Cessna 402](https://openairdocs.org/model/cessna-402) (registry code 207590K) (OpenAirDocs)
- Category: Airplane
- Serial number: 402-0151
- Engines: CONTINENTAL IO-520-F 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Part 135
- Operator: Alaska Island Air
- Registered owner: Alaska Island Air
- Airworthiness certificate: Standard, Normal
- Departed: OTZ, KOTZEBUE, AK
- Flight plan: Company VFR
- Airport: KVL, Kivalina, runway 30, 3,000 × 80 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 26; commercial, airline transport; airplane ratings: single-engine sea, multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 280° at 15 knots, gusting 20
- Visibility: 10 statute miles
- Lowest ceiling: 1,000 ft broken
- Temperature: 45 °F

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19930612020989A](https://openairdocs.org/incident/19930612020989A), Jun 12, 1993: Cessna 402CESSNA, Kivalina, AK, Substantial damage. Right main gear collapsed on landing roll. Pivet link between push pull and over center link broke. Out of rig.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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