# NTSB SEA88LA170: Grumman AA-5, N9559L, Toledo, WA, September 5, 1988

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 5, 1988, 12:45 local (19:45 UTC)
- Place: Toledo, WA
- Coordinates: 46.450595, -122.760307 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=46.4506&lon=-122.7603&mi=10
- Phase of flight: [Takeoff](https://openairdocs.org/ntsb-phases/300) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report December 6, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 40878
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA88LA170
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40878/pdf
- Page: https://openairdocs.org/ntsb/SEA88LA170

## Sequence of events

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

- Overrun, takeoff - aborted
  - landing gear,normal brake system - worn
  - aborted takeoff - delayed, pilot in command (cause)
  - brakes(normal) - improper use of, pilot in command (cause)
  - lack of total experience, pilot in command (contributing factor)
- Nose gear collapsed, takeoff - aborted
  - terrain condition - ditch (contributing factor)
  - object - fence (contributing factor)
  - landing gear,nose gear - overload

## Analysis

THE PILOT ABORTED THE FIRST TAKEOFF DUE TO THE ENGINE NOT DEVELOPING FULL POWER. AFTER ANOTHER RUN UP, THE PILOT ELECTED TO MAKE ANOTHER TAKEOFF. THE PILOT ABORTED MIDFIELD, BY RETARDING THE POWER AND APPLYING HEAVY BRAKING, DUE TO THE AIRCRAFT NOT DEVELOPING FULL POWER. THE BRAKE FADED AND AN OVERRUN OCCURRED. DURING THE OVERRUN THE AIRCRAFT STRUCK A DITCH AND THEN A BARBED WIRE FENCE. THE AIRCRAFT CAME TO REST IN ANOTHER DITCH WHERE THE NOSE GEAR SEPARATED FROM THE AIRCRAFT. NO REASON FOR THE ENGINE NOT DEVELOPING FULL POWER COULD BE DETERMINED. INSPECTION OF THE BRAKE SYSTEM REVEALED EVIDENCE OF OVERTEMPERATURE, EXCESSIVE WEAR, AND DETERIORATED BRAKE SEALS, CONSISTENT WITH OVERHEATING.

## Aircraft

- Registration: [N9559L](https://openairdocs.org/deregistered/N9559L-1998-02-25), registration cancelled 1998-02-25, S/N AA50559 (OpenAirDocs)
- Reported make and model: GRUMMAN AA-5
- Registry model: [Grumman American Avn. AA-5](https://openairdocs.org/model/grumman-american-avn-aa-5) (registry code 3960104) (OpenAirDocs)
- Category: Airplane
- Serial number: AA5-00559
- Airframe hours: 1678
- Engines: LYCOMING O-320-E2G 150 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Toledo Flying Club, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 19, 1988, 74 hours before
- Departed: TOLEDO, WA
- Airport: TDO, Toledo-Winlock, runway 23, 4,978 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 32; private; airplane ratings: single-engine land; medical: class 3, valid medical--no waivers/lim.; seat: left; flight hours: 49 total, 3 in this make and model, 5 as pilot in command, 32 in the last 90 days, 16 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 180° at 5 knots
- Visibility: 15 statute miles
- Lowest ceiling: 2,000 ft overcast
- Temperature: 64 °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 19880905037009A](https://openairdocs.org/incident/19880905037009A), Sep 5, 1988: Gulstm AA5, Toledo, WA, Substantial damage. Believed lacked power for takeoff. Aborted late,brakes faded. Ran into ditch off end runway. Heavy braking blew seals

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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