# NTSB SEA86LA067: Gulfstream 690C, N840SM, Ketchikan, AK, February 27, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 27, 1986, 16:18 local (20:18 UTC)
- Place: Ketchikan, AK
- Coordinates: 55.609645, -131.579833 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=55.6096&lon=-131.5798&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 40362
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA86LA067
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/40362/pdf
- Page: https://openairdocs.org/ntsb/SEA86LA067

## Sequence of events

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

- In flight encounter with weather, maneuvering - holding(ifr)
  - weather condition - high wind (cause)
  - flight into known adverse weather - selected, pilot in command (cause)
  - weather condition - turbulence in clouds (cause)
  - weather condition - gusts (cause)

## Analysis

WHILE AT 4700 FT MSL, ON A DME HOLD AWAITING CLEARANCE FOR AN ILS/DME APCH, SEVERE TURBULENCE WAS ENCOUNTERED. THE PLT WAS AWARE OF TURBULENCE IN THE AREA.

## Aircraft

- Registration: [N840SM](https://openairdocs.org/deregistered/N840SM-2020-05-26), registration cancelled 2020-05-26, S/N 11700, built 1981 (OpenAirDocs)
- Reported make and model: GULFSTREAM 690C
- Registry model: [Gulfstream AM Corp Comm Div 690C](https://openairdocs.org/model/gulfstream-am-corp-comm-div-690c) (registry code 3970404) (OpenAirDocs)
- Registry engine: [AiResearch TPE331-5&6SER](https://openairdocs.org/engine/airesearch-tpe331-5-6ser) (registry code 01515, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: 11700
- Airframe hours: 1160
- Engines: GARRETT TPE331-5-251K 718 horsepower turbo prop
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Hames, Inc.
- Registered owner: Hames, Inc.
- Airworthiness certificate: Standard, Normal
- Departed: SIT, SITKA, AK
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; commercial; airplane ratings: multi-engine land, single-engine sea, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 3,024 total, 1,815 in this make and model, 2,724 as pilot in command, 60 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 160° at 30 knots, gusting 48
- Visibility: 10 statute miles
- Lowest ceiling: 1,400 ft broken
- Temperature: 50 °F, dew point 45 °F
- Altimeter: 29.00 inHg
- Observed at: KTN, 14 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 19860227006799A](https://openairdocs.org/incident/19860227006799A), Feb 27, 1986: Gulstm 690C, Ketchikan, AK, Substantial damage. Encountered severe turbulence that prompted a missed approach. Skin wrinkles found on return to departure point.

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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