# NTSB LAX87LA022: Piper PA-22-160, N9206D, Big Bear City, CA, October 20, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 20, 1986, 13:15 local (20:15 UTC)
- Place: Big Bear City, CA
- Coordinates: 34.259094, -116.84027 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.2591&lon=-116.8403&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 25458
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX87LA022
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25458/pdf
- Page: https://openairdocs.org/ntsb/LAX87LA022

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - landing gear,normal brake system - worn (cause)
  - landing gear,normal brake system - failure,partial (cause)
  - fluid,hydraulic - contamination (contributing factor)
- Loss of control - on ground/water, landing - roll
  - brakes(normal) - not possible, pilot in command (cause)
  - directional control - not possible, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll

## Analysis

THE ACFT VEERED OFF RWY 7 DURING LANDING ROLL. THE PLT INDICATED THE ACFT VEERED TO THE RIGHT. THERE WAS A SINGLE RUBBER SKID MARK APRX 150 FT LONG FOUND ON THE RWY. THE WIND WAS REPORTED BY ANOTHER PLT TO BE 'DOWN THE RUNWAY AT 10-15 KNOTS.' EXAMINATION OF THE ACFT REVEALED THE LEFT BRAKE MASTER CYLINDER FAILED. METAL PARTICLES HAD CONTAMINATED THE BRAKE FLUID. VISUAL INSPECTION OF THE CYLINDER WALLS SHOWED SIGNS OF DETERIORATION.

## Aircraft

- Registration: [N9206D](https://openairdocs.org/aircraft/N9206D), registered now, S/N 22-6265, built 1958 (OpenAirDocs)
- Reported make and model: PIPER PA-22-160
- Registry model: [Piper PA-22-160](https://openairdocs.org/model/piper-pa-22-160) (registry code 7102214) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 22-6265
- Airframe hours: 3168
- Engines: LYCOMING O-320-B2B 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Muellner, Peter M.
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 17, 1985, 17 hours before
- Departed: SAN, SAN DIEGO, CA
- Destination: L35, BIG BEAR CITY, CA
- Airport: L35, Big Bear City, runway 7, 5,850 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; commercial, airline transport, flight engineer; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 13,244 total, 69 in this make and model, 6,030 as pilot in command, 214 in the last 90 days, 84 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 6 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 48 °F
- Altimeter: 30.00 inHg
- Observed at: SBD, 22 nm away

## 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 19861020049689A](https://openairdocs.org/incident/19861020049689A), Oct 20, 1986: Piper PA22160, Big Bear City, CA, Substantial damage. The plane ground looped on landing. Left master cylinder had failed. Inspection showed deterioration of material.

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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