# NTSB SEA88LA137: Cessna 172, N8109B, Coeur D'Alene, ID, July 23, 1988

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 23, 1988, 11:45 local (18:45 UTC)
- Place: Coeur D'Alene, ID
- Coordinates: 47.589698, -116.909652 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=47.5897&lon=-116.9097&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed, report June 7, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40853
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA137
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40853/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA137

## Sequence of events

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

- In flight collision with terrain/water, climb
  - terrain condition - mountainous/hilly (contributing factor)
  - in-flight planning/decision - improper, pilot in command (cause)
  - engine assembly,cylinder - low compression (contributing factor)
  - weather condition - high density altitude (contributing factor)

## Analysis

AFTER LOW PASS OVER INTENDED LANDING AREA, ACFT WOULD NOT OUTCLIMB RISING TERRAIN IN CANYON. PLT MUSHED INTO BRUSHY CLEARCUT AREA RATHER THAN COLLIDE WITH ROUGH TERRAIN. PLT REPORT STATED FINDING OF LOW COMPRESSION ON 3 CYLS. DENSITY ALTITUDE ESTIMATED AT 6500 FT.

## Aircraft

- Registration: [N8109B](https://openairdocs.org/deregistered/N8109B-1991-03-13), registration cancelled 1991-03-13, S/N 29909 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172](https://openairdocs.org/model/cessna-172) (registry code 2072402) (OpenAirDocs)
- Category: Airplane
- Serial number: 29909
- Airframe hours: 1491
- Engines: CONTINENTAL O-300-A 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Robert L. Hempen
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 11, 1987, 96 hours before
- Departed: COE, COEUR D'ALENE, ID

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; military, private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 6,500 total, 150 in this make and model, 6,000 as pilot in command, 30 in the last 90 days, 20 in the last 30 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 3 knots
- Visibility: 30 statute miles
- Lowest ceiling: none
- Temperature: 82 °F, dew point 46 °F
- Altimeter: 30.00 inHg
- Observed at: SFF, 20 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 19880723027779A](https://openairdocs.org/incident/19880723027779A), Jul 23, 1988: Cessna 172, Coeur De'Alene, ID, Substantial damage. Unable to outclimb rising terrain in a canyon. Stall mush landed in a clearing. Had made low pass of closed strip.

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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