# NTSB ANC86LA040: Cessna 170-B, N1999C, Whittier, AK, March 22, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: March 22, 1986, 10:15 local (14:15 UTC)
- Place: Whittier, AK
- Coordinates: 60.84943, -148.029876 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=60.8494&lon=-148.0299&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 4646
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC86LA040
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/4646/pdf
- Page: https://openairdocs.org/ntsb/ANC86LA040

## 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
  - terrain condition - snow covered (contributing factor)
  - preflight planning/preparation - inadequate, pilot in command (cause)
  - directional control - not maintained, pilot in command (cause)
- Nose down, landing - roll

## Analysis

THE PILOT STATED THAT AFTER TOUCHDOWN HE REALIZED THAT THE SNOW WAS SOFT. THE AIRCRAFT NOSED OVER ON ITS BACK.

## Aircraft

- Registration: [N1999C](https://openairdocs.org/aircraft/N1999C), registered now, S/N 26039, built 1953 (OpenAirDocs)
- Reported make and model: CESSNA 170-B
- Registry model: [Cessna 170B](https://openairdocs.org/model/cessna-170b) (registry code 2072306) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 26039
- Airframe hours: 2680
- Engines: CONTINENTAL O-300 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: John W. Page
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 18, 1985, 50 hours before
- Departed: MRI, ANCHORAGE, AK
- Airport: AK66, Whittier, runway 21, 1,500 × 20 ft, snow

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--w/ waivers/lim; seat: left; flight hours: 751 total, 138 in this make and model, 740 as pilot in command, 15 in the last 90 days, 7 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 5 knots
- Visibility: 80 statute miles
- Lowest ceiling: none
- Temperature: 28 °F, dew point 16 °F
- Altimeter: 29.00 inHg

## 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 19860322007349A](https://openairdocs.org/incident/19860322007349A), Mar 22, 1986: Cessna 170B, Whittier, AK, Substantial damage. Thought runway was covered with packed snow. Nosed over during touchdown on runway with snow 2 to 3 feet deep.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.