# NTSB SEA86LA136: Cessna 185, N9397N, Boise, ID, June 5, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: June 5, 1986, 16:30 local (22:30 UTC)
- Place: Boise, ID
- Coordinates: 43.560855, -116.210517 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.5609&lon=-116.2105&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40416
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA136
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40416/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA136

## Analysis

DURING ROLLOUT AFTER LANDING, THE PILOT WAS ASKED BY THE TOWER TO EXPEDITE CLEARING THE RUNWAY DUE TO LANDING TRAFFIC. AS THE AIRCRAFT HAD SLOWED, THE PILOT ATTEMPTED A TURNOUT WHEN A GROUNDLOOP OCCURRED. A GUST OF WIND PRECIPITATED THE GROUNDLOOP. THE WIND AT THE TIME WAS REPORTED TO BE FROM 070 AT 8 KNOTS GUSTING TO 12 KNOTS.

## 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 - gusts (contributing factor)
  - proper alignment - not maintained, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll

## Aircraft

- Registration: N9397N (not matched to a registry record)
- Reported make and model: CESSNA 185
- Category: Airplane
- Serial number: 185-04348
- Airframe hours: 808
- Engines: CONTINENTAL IO-520-D 300 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Robert N. Rebholtz, doing business as Aero Boise
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 7, 1986
- Departed: EKO, ELKO, NV
- Destination: BOI, BOISE, ID
- Airport: BOI, Boise Air Terminal, runway 28, 9,763 × 190 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; private; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 6,432 total, 10 in this make and model, 6,437 as pilot in command, 51 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 90° at 14 knots
- Visibility: 30 statute miles
- Lowest ceiling: 20,000 ft broken
- Temperature: 77 °F, dew point 54 °F
- Altimeter: 29.00 inHg
- Observed at: BOI

## 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 19860605024469A](https://openairdocs.org/incident/19860605024469A), Jun 5, 1986: Cessna 185, Boise, ID, Substantial damage. After landing slowed to turn off runway and aircraft ground looped. Pilot blamed a wind gust.

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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