# NTSB LAX92LA264: Danny W. Sadek S-12, N512, Big Bear, CA, June 28, 1992

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: June 28, 1992, 10:40 local (17:40 UTC)
- Place: Big Bear, CA
- Coordinates: 34.23077, -116.860832 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=34.2308&lon=-116.8608&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Completed, report September 28, 1993
- Report: Approved by Office Director
- NTSB case key (mKey): 27662
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX92LA264
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/27662/pdf
- Page: https://openairdocs.org/ntsb/LAX92LA264

## Probable cause

THE PILOT'S FAILURE TO MAINTAIN AN ADEQUATE AIRSPEED AND THE INADVERTENT ENTRY INTO A STALL/MUSH CONDITION.  FACTORS IN THE ACCIDENT WERE THE HIGH DENSITY ALTITUDE CONDITION AND THE PILOTS LIMITED TOTAL EXPERIENCE.

## 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
  - weather condition - high density altitude (contributing factor)
  - airspeed - not maintained, pilot in command (cause)
  - lack of total experience in type of aircraft, pilot in command (contributing factor)
  - stall/mush - inadvertent, pilot in command (cause)
- In flight collision with terrain/water, descent - uncontrolled

## Analysis

AIRPORT EMPLOYEES OBSERVED THE AIRCRAFT TAKEOFF ON RUNWAY 25 AND ACHIEVE AN ALTITUDE OF ABOUT 50 FEET ABOVE THE GROUND.  THE WITNESSES REPORTED THAT THE AIRCRAFT SEEMED TO BE 'STRUGGLING' AS IT FLEW DOWN THE RUNWAY AT THAT ALTITUDE.  ABOUT ONE HALF MILE BEYOND THE END OF THE RUNWAY THE AIRCRAFT WAS OBSERVED TO BEGIN A LEFT TURN, STALL, THEN FALL OFF ON THE LEFT WING AND HIT THE GROUND NOSE FIRST.  BASED ON THE TEMPERATURE AND PRESSURE ALTITUDE REPORTED BY THE AIRPORT WORKERS, THE DENSITY ALTITUDE FOR THE 6,820 FOOT HIGH AIRPORT WAS CALCULATED TO BE IN EXCESS OF 8,800 FEET.  THE PILOT REPORTED THAT HE HAD A TOTAL TIME OF 130 HOURS, WITH 49 ACCUMULATED IN THE EXPERIMENTAL HOME BUILT AIRCRAFT.

## Aircraft

- Registration: [N512](https://openairdocs.org/deregistered/N512-1993-02-02), registration cancelled 1993-02-02, S/N 0491072 (OpenAirDocs)
- Reported make and model: DANNY W. SADEK S-12
- Registry model: [Sadek Danny W S-12](https://openairdocs.org/model/sadek-danny-w-s-12) (registry code 05618A9) (OpenAirDocs)
- Category: Airplane, amateur-built
- Serial number: 0491072
- Airframe hours: 49
- Engines: ROTAX 503 UL 50 horsepower reciprocating
- Damage: Destroyed
- Flight: Personal, Part 91
- Operator: Danny W. Sadek
- Registered owner: Danny W. Sadek
- Airworthiness certificate: Special, Experimental (Special)
- Last inspection: Annual, February 28, 1992, 49 hours before
- Departed: L35
- Destination: L39, RAMONA, CA

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 34; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; flight hours: 130 total, 49 in this make and model, 130 as pilot in command, 36 in the last 90 days, 18 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 15 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 68 °F
- Altimeter: 30.00 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 19920628021959A](https://openairdocs.org/incident/19920628021959A), Jun 28, 1992: Amtr S12, Big Bear, CA, Destroyed. Struggling on takeoff due high temprature and high density altitude. Stalled beginning a left turn and crashed.

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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