# NTSB LAX85LA397: Cessna 182P, N7208N, Mammoth Lakes, CA, September 20, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 20, 1985, 10:00 local (17:00 UTC)
- Place: Mammoth Lakes, CA
- Coordinates: 37.579921, -118.839508 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=37.5799&lon=-118.8395&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24840
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX85LA397
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24840/pdf
- Page: https://openairdocs.org/ntsb/LAX85LA397

## Sequence of events

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

- Airframe/component/system failure/malfunction, descent - normal
  - throttle/power lever - movement restricted (contributing factor)
  - throttle/power lever - undetermined (cause)
- Undershoot, approach - vfr pattern - base leg/base to final
  - planned approach - misjudged, pilot in command (cause)
  - mixture - premature, pilot in command (contributing factor)
- Loss of control - in flight, approach - vfr pattern - base leg/base to final
  - airspeed - not maintained, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

THE PLT STATED THAT THE AFCT'S THROTTLE STUCK IN THE FULL POWER POSITION. HE SHUT THE ENGINE DOWN USING THE MIXTURE CONTROL, BUT MISJUDGED HIS ALTITUDE, STALLED THE AIRCRAFT & CRASHED SHORT OF THE RUNWAY. THE CONDITION OF THE WRECKAGE PRECLUDED DETERMINATION OF THE PRE-ACCIDENT CONDITION OF THE THROTTLE ASSEMBLY.

## Aircraft

- Registration: [N7208N](https://openairdocs.org/deregistered/N7208N-1986-01-13), registration cancelled 1986-01-13, S/N 18263000 (OpenAirDocs)
- Reported make and model: CESSNA 182P
- Registry model: [Cessna 182P](https://openairdocs.org/model/cessna-182p) (registry code 2075816) (OpenAirDocs)
- Category: Airplane
- Serial number: 18263000
- Airframe hours: 1570
- Engines: CONTINENTAL O-470-R 230 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Philip A. Zimmerman
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, February 6, 1985, 105 hours before
- Departed: SDM, SAN DIEGO, CA
- Destination: MMH
- Flight plan: VFR
- Airport: MMH, Mammoth Lakes

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 64; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 738 total, 738 in this make and model, 721 as pilot in command, 54 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 40 statute miles
- Lowest ceiling: none
- Temperature: 54 °F, dew point 19 °F
- Altimeter: 30.00 inHg
- Observed at: MMH

## 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 19850920065519A](https://openairdocs.org/incident/19850920065519A), Sep 20, 1985: Cessna 182P, Mammoth Lakes, NV, Substantial damage. Stalled aircraft and impacted ground near runway after throttle stuck open. Used mixture for attempted landing.

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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