# NTSB LAX92LA341: Bellanca 17-30A, N6649V, Sedona, AZ, August 9, 1992

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 9, 1992, 13:15 local (20:15 UTC)
- Place: Sedona, AZ
- Coordinates: 34.939125, -111.940063 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.9391&lon=-111.9401&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report July 26, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 27724
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX92LA341
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/27724/pdf
- Page: https://openairdocs.org/ntsb/LAX92LA341

## Probable cause

THE FAILURE OF THE FIXED BASE OPERATOR TO PROPERLY CONDUCT AN ANNUAL INSPECTION AND INADEQUATE COMPLIANCE WITH THE AIRWORTHINESS DIRECTIVE. CONTRIBUTING TO THIS ACCIDENT WAS THE TOTAL FAILURE OF THE MAIN LANDING GEAR TRUNION DUE TO FATIGUE.

## Sequence of events

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

- Main gear collapsed, landing - roll
  - landing gear,main gear attachment - failure,total (contributing factor)
  - landing gear,main gear attachment - fatigue (contributing factor)
  - maintenance,service of aircraft/equipment - poor, other maintenance personnel (cause)
  - maintenance,compliance with ad - inadequate, other maintenance personnel (cause)

## Analysis

DURING THE LANDING ROLLOUT THE RIGHT MAIN LANDING GEAR COLLAPSED AND THE AIRPLANE GROUND LOOPED. EXAMINATION OF THE LANDING GEAR TRUNNION REVEALED A TOTAL FATIGUE FAILURE AROUND THE WELD.  THE EXAMINATION ALSO REVEALED THE PRESENCE OF A CRACK ON THE LEFT MAIN LANDING GEAR TRUNNION.

## Aircraft

- Registration: [N6649V](https://openairdocs.org/deregistered/N6649V-2017-10-23), registration cancelled 2017-10-23, S/N 30305, built 1970 (OpenAirDocs)
- Reported make and model: BELLANCA 17-30A
- Registry model: [Bellanca 17-30A](https://openairdocs.org/model/bellanca-17-30a) (registry code 1220433) (OpenAirDocs)
- Registry engine: [Continental IO-520 series](https://openairdocs.org/engine/continental-io-520-series) (registry code 17032, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 30305
- Airframe hours: 2366
- Engines: CONTINENTAL IO-520 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Bjornstad, Lidy A.
- Registered owner: Bjornstad, Lidy A.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, June 12, 1992, 44 hours before
- Departed: SDL, SCOTTSDALE, AZ
- Airport: SEZ, Sedona, runway 3, 5,131 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 46; private; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 300 total, 170 in this make and model, 262 as pilot in command, 75 in the last 90 days, 25 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 40° at 5 knots
- Visibility: 25 statute miles
- Lowest ceiling: 5,000 ft broken
- Temperature: 30 °F, dew point 64 °F
- 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 (OpenAirDocs).

- [Accident 19920809029899A](https://openairdocs.org/incident/19920809029899A), Aug 9, 1992: Blanca 1730A, Sedona, AZ, Substantial damage. Right main gear collapsed on landing roll causing ground loop. Upper trunnion attach weld failed.

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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