# NTSB LAX88DUJ01: Warnke Sonerie II, N505BW, Patagonia, AZ, October 26, 1987

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: October 25, 1987, 17:20 local (Oct 26, 1987, 00:20 UTC)
- Place: Patagonia, AZ
- Coordinates: 31.529191, -110.710365 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=31.5292&lon=-110.7104&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious
- Status: Completed, report March 31, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 25722
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX88DUJ01
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25722/pdf
- Page: https://openairdocs.org/ntsb/LAX88DUJ01

## Sequence of events

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

- Loss of engine power, cruise - normal
  - ignition system - failure,total (cause)
- Forced landing, descent - emergency
- In flight collision with terrain/water, landing
  - terrain condition - mountainous/hilly (contributing factor)

## Analysis

DURING A LOCAL FLIGHT, THE ENGINE LOST POWER. SUBSEQUENTLY, THE AIRCRAFT WAS EXTENSIVELY DAMAGED DURING A FORCED LANDINGIN MOUNTAINOUS TERRAIN. THE REASON FOR THE POWER LOSS WAS REPORTED TO BE FROM AN ELECTRICAL MALFUNCTION OF THE IGNITION SYSTEM.

## Aircraft

- Registration: [N505BW](https://openairdocs.org/deregistered/N505BW-1994-03-25), registration cancelled 1994-03-25, S/N 92525 (OpenAirDocs)
- Reported make and model: WARNKE SONERIE II
- Registry model: [Warnke Bernhard J SONERAI II](https://openairdocs.org/model/warnke-bernhard-j-sonerai-ii) (registry code 05659RM) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 92525
- Airframe hours: 600
- Engines: Volkswagen ENG 75 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Warnke, Bernard J.
- Registered owner: Bernhard J Warnke
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: AAIP, October 18, 1987
- Departed: RYN, TUCSON, AZ

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 62; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: rear; flight hours: 2,000 total, 600 in this make and model, 2,000 as pilot in command, 65 in the last 90 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none
- Temperature: 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 19871025060759A](https://openairdocs.org/incident/19871025060759A), Oct 25, 1987: Amtrmo SONERAI2, Patagonia, AZ, Substantial damage. Power loss in mountainous terrain due to loss of ignition. Crash landed on rough ground.

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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