# NTSB SEA87LA104: Cessna 172, N4173F, Prospect, OR, May 29, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: May 29, 1987, 11:30 local (18:30 UTC)
- Place: Prospect, OR
- Coordinates: 42.779106, -122.490516 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.7791&lon=-122.4905&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed, report May 2, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 40631
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87LA104
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40631/pdf
- Page: https://openairdocs.org/ntsb/SEA87LA104

## 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, cruise - normal
  - fluid,oil - leak (cause)
  - maintenance,overhaul - not performed, company/operator management (cause)
  - fluid,oil - starvation (cause)
- Forced landing, landing
- On ground/water encounter with terrain/water, landing - roll
  - object - tree(s) (contributing factor)

## Analysis

THE ACFT LOST PWR DURING CRUISE FLT DUE TO LOSS OF OIL PRESSURE BECAUSE OF MULTIPLE OIL LEAKS. THE RECOMMENDED T.B.O. IS 1800 HRS AND THIS ENG HAD A TOTAL OF 2344 HRS. A TOP OVERHAUL HAD BEEN ACCOMPLISHED 140 FLT HRS PRIOR TO THE ACC. THE ACFT HAD ONLY BEEN FLOWN 25 HRS IN THE LAST 3 YRS. THE PLT HAD DEPARTED ON THIS X-COUNTRY WITHOUT FILING A FLT PLAN. DURING THE FORCED LNDG AFTER THE LOSS OF POWER THE ACFT COLLIDED WITH TREES DURING THE LNDG ROLL.

## Aircraft

- Registration: [N4173F](https://openairdocs.org/deregistered/N4173F-2012-08-01), registration cancelled 2012-08-01, S/N 46073, built 1958 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172](https://openairdocs.org/model/cessna-172) (registry code 2072402) (OpenAirDocs)
- Registry engine: [Continental 0-300 series](https://openairdocs.org/engine/continental-0-300-series) (registry code 17022, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17246073
- Airframe hours: 2290
- Engines: CONTINENTAL O-300 A 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Robert W. Baucum
- Registered owner: Robert W. Baucum
- Airworthiness certificate: Standard, Normal
- Departed: S13, ALBANY, OR
- Destination: RNO, RENO, NV

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 1,030 total, 100 in this make and model, 40 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 50 °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 19870529017229A](https://openairdocs.org/incident/19870529017229A), May 29, 1987: Cessna 172, Prospect, OR, Destroyed. The engine failed from a lack of oil. Aircraft hit trees on landing. Inadequate maintenance led to many oil leaks.

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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