# NTSB SEA87LA156: Boeing IB75A, N400JT, Spokane, WA, July 12, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: July 12, 1987, 15:00 local (22:00 UTC)
- Place: Spokane, WA
- Location: 47.6829° N, 117.3224° W: Placed by OpenAirDocs at FELTS FLD (SFF), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=47.6829&lon=-117.3224&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report October 25, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 40670
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA87LA156
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40670/pdf
- Page: https://openairdocs.org/ntsb/SEA87LA156

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - weather condition - crosswind (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - inadvertent, pilot in command (cause)
- Dragged wing,rotor,pod,float or tail/skid, landing - roll

## Analysis

THE PLT RPRTD THAT WHEN HE LANDED, THE WIND WAS FROM 190 DEG AT 6 GUSTING 12 KTS. DRG THE LANDING ROLL, AFTER SLOWING TO AN ESTIMATED 15 KTS, THE ACFT ENCOUNTERED A GUST OF WIND WHICH CAUSED 'THE RIGHT WING TO DIP.'  SUBSEQUENTLY, THE ACFT 'ROTATED' ABOUT 60 DEG DAMAGING THE LOWER RIGHT WING TIP & SPAR, BUT THE PLT WAS ABLE TO TAXI TO THE PARKING AREA.

## Aircraft

- Registration: [N400JT](https://openairdocs.org/deregistered/N400JT-1988-05-20), registration cancelled 1988-05-20, S/N 756648 (OpenAirDocs)
- Reported make and model: BOEING IB75A
- Registry model: [Boeing IB75A](https://openairdocs.org/model/boeing-ib75a) (registry code 1380152) (OpenAirDocs)
- Category: Airplane
- Serial number: 75-6648
- Engines: P&W R-985 450 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Daniel Abbott
- Airworthiness certificate: Standard, Normal
- Airport: SFF, Felts Field, runway 21R, 4,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: rear; flight hours: 202 total, 35 in this make and model, 130 as pilot in command, 18 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 190° at 6 knots, gusting 12
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 75 °F, dew point 39 °F
- Altimeter: 29.00 inHg
- Observed at: 1

## 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 19870712081199A](https://openairdocs.org/incident/19870712081199A), Jul 12, 1987: Boeing A75, Spokane, WA, Substantial damage. Lost control and ground looped on landing. Accident not reported. Discovered on routine FAA survey.

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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