# NTSB SEA07CA211: Artic S-1B2, N176AZ, McCall, ID, July 24, 2007

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Data collection · Final report
- Date: July 24, 2007, 14:10 local (20:10 UTC)
- Place: McCall, ID
- Coordinates: 44.898612, -116.105003
- Nearby events: https://openairdocs.org/map.md?lat=44.8986&lon=-116.1050&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report November 29, 2007
- Report: Approved by Office Director
- NTSB case key (mKey): 66287
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA07CA211
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/66287/pdf
- Page: https://openairdocs.org/ntsb/SEA07CA211

## Probable cause

The pilot's failure to maintain airspeed during the landing flare resulting in a hard landing and subsequent failure to maintain directional control during the landing roll.  The soft terrain condition adjacent to the runway was a factor.

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - airspeed - not maintained, pilot in command (cause)
  - flare - improper, pilot in command
- Loss of control - on ground/water, landing - roll
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - encountered, pilot in command
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - soft (contributing factor)

## Analysis

The pilot entered the aircraft into the traffic pattern on a left downwind and flew a "stable" base and final leg.  However, when the aircraft crossed the runway threshold, a "rapid sink rate developed" and the aircraft experienced a hard landing.  Upon touchdown, the aircraft swerved to the left and departed the runway surface onto soft, sandy soil.  The right wingtip contacted the ground, and the aircraft, stopped by the soft terrain, nosed over onto the propeller.

## Factual narrative

The pilot entered the aircraft into the traffic pattern on a left downwind and flew a "stable" base and final leg.  However, when the aircraft crossed the runway threshold, a "rapid sink rate developed" and the aircraft experienced a hard landing.  Upon touchdown, the aircraft swerved to the left and departed the runway surface onto soft, sandy soil.  The right wingtip contacted the ground, and the aircraft, stopped by the soft terrain, nosed down onto the propeller.

The pilot reported no mechanical failures or malfunctions with the aircraft prior to the accident.

## Aircraft

- Registration: [N176AZ](https://openairdocs.org/aircraft/N176AZ), registered now, S/N 1027, built 1983 (OpenAirDocs)
- Reported make and model: Artic Aircraft Corp. S-1B2
- Registry model: [Arctic S-1B2](https://openairdocs.org/model/arctic-s-1b2) (registry code 0790208) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 1027
- Airframe hours: 925.7
- Engines: Lycoming O-320-B2B reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Cedric Hayden
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, September 1, 2006
- Departed: ONO, ONTARIO, OR
- Destination: MYL, MC CALL, ID
- Airport: MYL, Mc Call, runway 34, 6,107 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 72; injuries: none; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review September 1, 2006; seat: front; flight hours: 730 total, 61 in this make and model, 518 as pilot in command, 20 in the last 90 days, 13 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 10 statute miles
- Lowest ceiling: none

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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