# NTSB ANC90FA027: Beech E18F, N900TH, Anchorage, AK, January 15, 1990

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: January 15, 1990, 07:54 local (11:54 UTC)
- Place: Anchorage, AK
- Coordinates: 61.180198, -149.879592 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.1802&lon=-149.8796&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed, report September 30, 1991
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5281
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC90FA027
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5281/pdf
- Page: https://openairdocs.org/ntsb/ANC90FA027

## Probable cause

INADEQUATE SUPERVISION BY COMPANY/OPERATOR PERSONNEL AND INADEQUATE PREFLIGHT PLANNING/PREPARATION BY THE CAPTAIN, WHICH RESULTED IN AN IMPROPERLY LOADED AIRCRAFT.

## Sequence of events

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

- Loss of control - in flight, takeoff - initial climb
  - supervision - inadequate, company/operator management (cause)
  - aircraft preflight - inadequate, pilot in command (cause)
  - aircraft weight and balance - exceeded (cause)
- In flight collision with terrain/water, takeoff - aborted

## Analysis

THE CAPT RPRTD THAT AFTER LIFT-OFF, THE ACFT BEGAN A LEFT ROLL AS THE LANDING GEAR WAS RETRACTED. HE CORRECTED WITH AILERON/RUDDER & LOWERED THE NOSE, BUT THE ACFT ROLLED TO THE RIGHT, THEN BACK TO THE LEFT. SUBSEQUENTLY, HE LANDED THE ACFT NEAR THE DEP END OF THE RWY WITH THE LANDING GEAR RETRACTED. AN INVESTIGATION REVEALED THE ACFT HAD BEEN LOADED TO A WT OF ABOUT 12,850 LBS. THE MAX GROSS WT LIMIT FOR THE ACFT WAS 11,500 LBS. ALSO, THE ACFT'S CENTER-OF- GRAVITY WAS ESTIMATED TO BE ABOUT 3 INCHES AFT OF THE AFT LIMIT. THE COMPANY DIRECTOR RPRTD THAT WHEN THE CARGO SHIP- MENT(S) WERE DELIVERED TO THE COMPANY, THE WEIGHT(S) WERE NOT CHECKED PRIOR TO LOADING THE ACFT.

## Aircraft

- Registration: [N900TH](https://openairdocs.org/deregistered/N900TH-2004-06-29), registration cancelled 2004-06-29, S/N BA-106, built 1941 (OpenAirDocs)
- Reported make and model: BEECH E18F
- Registry model: [Beech E18S](https://openairdocs.org/model/beech-e18s) (registry code 1151006) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-985 series](https://openairdocs.org/engine/pratt-whitney-r-985-series) (registry code 52008, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: BA106
- Airframe hours: 5771
- Engines: GARRETT 331-1-101B 620 horsepower turbo prop
- Damage: Substantial damage
- Flight: Part 135
- Registered owner: Troy Air Incorporated
- Airworthiness certificate: Standard, Normal
- Last inspection: AAIP, December 16, 1989, 32 hours before
- Departed: ANC
- Destination: ADQ, KODIAK, AK
- Flight plan: IFR
- Airport: ANC, Anchorage Intl, runway 24L, 10,897 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 28; flight instructor, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 5,380 total, 50 in this make and model, 5,329 as pilot in command, 280 in the last 90 days, 50 in the last 30 days

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 190° at 4 knots
- Visibility: 20 statute miles
- Lowest ceiling: 10,000 ft broken
- Temperature: 19 °F, dew point 18 °F
- Altimeter: 29.00 inHg
- Observed at: ANC, 1 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 19900115000449A](https://openairdocs.org/incident/19900115000449A), Jan 15, 1990: Beech E18S, Anchorage, AK, Substantial damage. Unable to laterally control aircraft on liftoff aborted and landed gear up on runway. Was over gross by 1351 lbs.

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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