# NTSB ANC92LA101: Mooney Rans S-7 Courier, N48PS, Big Lake, AK, July 3, 1992

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: July 3, 1992, 11:00 local (19:00 UTC)
- Place: Big Lake, AK
- Coordinates: 61.459445, -150.089736 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=61.4594&lon=-150.0897&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor
- Status: Completed, report September 14, 1993
- Report: Approved by Office Director
- NTSB office: Alaska Regional Office
- NTSB case key (mKey): 5750
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC92LA101
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/5750/pdf
- Page: https://openairdocs.org/ntsb/ANC92LA101

## Probable cause

THE PILOT'S DELAYED REMEDIAL ACTION, AND AN INADVERTENT STALL. FACTORS INCLUDE WIND GUSTS AND A WIND SHEAR.

## 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
  - stall - inadvertent, pilot in command (cause)
  - weather condition - windshear (contributing factor)
  - weather condition - gusts (contributing factor)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PILOT OF THE EXPERIMENTAL RANS S-7 ENCOUNTERED A WIND SHEAR DURING HIS INITIAL CLIMBOUT. DURING THIS ENCOUNTER THE PILOT ALLOWED THE AIRCRAFT TO STALL, RESULTING IN AN UNCONTROLLED DESCENT INTO THE TERRAIN.

## Aircraft

- Registration: [N48PS](https://openairdocs.org/deregistered/N48PS-1993-09-14), registration cancelled 1993-09-14, S/N 0689048 (OpenAirDocs)
- Reported make and model: MOONEY RANS S-7 COURIER (RANS S-7 C)
- Registry model: [Mooney Pat RANS S-7 COURIER](https://openairdocs.org/model/mooney-pat-rans-s-7-courier) (registry code 05616XE) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 0689048
- Airframe hours: 45
- Engines: Rotax 582 65 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Operator: Mooney, Patrick D.
- Registered owner: Mooney, Patrick D.
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, May 1, 1992, 1 hours before
- Destination: MRI, ANCHORAGE, AK
- Airport: BGQ, Big Lake Airport, runway 24, 3,000 × 75 ft, gravel

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 50; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: front; flight hours: 579 total, 45 in this make and model, 538 as pilot in command

## Weather

- Conditions: Visual (VMC), Day
- Wind: 310° at 10 knots, gusting 15
- Visibility: 90 statute miles
- Lowest ceiling: none
- Temperature: 61 °F

## 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 19920703023559A](https://openairdocs.org/incident/19920703023559A), Jul 3, 1992: Amtr RANSS9, Big Lake, AK, Substantial damage. Stalled on climbout from remote strip. Blames windshear. Other pilots reported windshear in area.

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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