# NTSB LAX83LA212: Piper PA-28-151, N40755, Milpitas, CA, May 3, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 3, 1983, 15:10 local (22:10 UTC)
- Place: Milpitas, CA
- Coordinates: 37.439048, -121.870574 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.4390&lon=-121.8706&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 23695
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX83LA212
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/23695/pdf
- Page: https://openairdocs.org/ntsb/LAX83LA212

## Sequence of events

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

- Loss of engine power(total) - mech failure/malf, descent - normal
  - accessory drive assy,drive gear - loose (cause)
  - engine assembly,other - overload
  - accessory drive assy - inoperative
- Forced landing, landing
- On ground/water collision with object, landing - roll
  - object - utility pole (contributing factor)

## Analysis

WHILE DESCENDING THRU 4300 FT, THE ENG LOST POWER. THE PLT MADE AN EMERGENCY LANDING ON A GULF COURSE, BUT DURING THE LANDING ROLL, THE RIGHT WING OF THE ACFT IMPACTED A POLE & WAS DAMAGED. AN EXAM REVEALED THAT THE 5/16 INCH BOLT, PN STD-847, THAT SECURED THE CRANKSHAFT GEAR TO THE AFT END OF THE CRANKSHAFT HAD BACKED OUT. THIS RESULTED IN SHEARING OF THE DOWL PIN. IN TURN, THE CRANKSHAFT COULD NOT DRIVE THE ACCESSORIES, WHICH INCLUDED THE MAGNETOS & VACUUM PUMP. THE ENG HAD OPERATED 371 HRS SINCE OVERHAUL.

## Aircraft

- Registration: [N40755](https://openairdocs.org/aircraft/N40755), registered now, S/N 28-7415079 (OpenAirDocs)
- Reported make and model: PIPER PA-28-151
- Registry model: [Piper PA-28-151](https://openairdocs.org/model/piper-pa-28-151) (registry code 7102805) (OpenAirDocs)
- Category: Airplane
- Serial number: 28-7415079
- Airframe hours: 2656
- Engines: LYCOMING O-320-E3D 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Mr. Aircraft
- Registered owner: Frances Henry
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 3, 1982, 93 hours before
- Departed: 061, CAMERON PARK, CA
- Destination: SJC, SAN JOSE, CA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 36; commercial; airplane ratings: single-engine land, multi-engine land; instrument ratings: helicopter, airplane; medical: class 1, expired; seat: left; flight hours: 4,000 total

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 68 °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 19830503017239A](https://openairdocs.org/incident/19830503017239A), May 3, 1983: Piper PA28151, Milpitas, CA, Substantial damage. Crash occurred when engine failed and aircraft hit pole during emergency landing.

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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