# NTSB SEA88LA157: Cessna 172N, N737RB, Tyge Valley, OR, August 20, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: August 20, 1988, 11:05 local (18:05 UTC)
- Place: Tyge Valley, OR
- Coordinates: 45.219295, -121.260559 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.2193&lon=-121.2606&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report July 26, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40869
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA157
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40869/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA157

## Sequence of events

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

- Hard landing, landing
  - descent - excessive, pilot in command (contributing factor)
  - flare - improper, pilot in command (cause)
  - lack of total experience, pilot in command (contributing factor)
  - recovery from bounced landing - not performed, pilot in command (cause)
- Nose over, landing

## Analysis

THE PILOT REPORTED THAT LATE IN THE APCH, THE ACFT DEVELOPED A HIGH SINK RATE. HOWEVER, HE USED ELEVATOR ONLY TO CORRECT THE SINK RATE. THE AIRCRAFT IMPACTED THE RUNWAY AND BOUNCED. ON THE THIRD BOUNCE, THE NOSE GEAR FAILED AND THE AIRCRAFT NOSED OVER. THE PILOT STATED LATER THAT HE SHOULD HAVE USED POWER TO CORRECT THE SINK RATE.

## Aircraft

- Registration: [N737RB](https://openairdocs.org/deregistered/N737RB-1991-06-17), registration cancelled 1991-06-17, S/N 17269606 (OpenAirDocs)
- Reported make and model: CESSNA 172N
- Registry model: [Cessna 172N](https://openairdocs.org/model/cessna-172n) (registry code 2072434) (OpenAirDocs)
- Category: Airplane
- Serial number: 17269606
- Airframe hours: 3768
- Engines: LYCOMING O-320-H2AD 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Scenic Air Service, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 16, 1988, 6 hours before
- Departed: TTD, TROUTDALE, OR
- Flight plan: VFR
- Airport: Pine Hollow, runway 18, 3,200 × 250 ft, grass/turf

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 40; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 114 total, 9 in this make and model, 64 as pilot in command, 7 in the last 90 days, 4 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 25 statute miles
- Lowest ceiling: none
- Temperature: 75 °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 19880820034549A](https://openairdocs.org/incident/19880820034549A), Aug 20, 1988: Cessna 172N, Tyge Valley, OR, Substantial damage. Bounced and porpoised on landing. Nose gear collapsed. Aircraft flipped over.

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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