# NTSB LAX84LA272: Douglas DC-6A, N92860, San Manuel, AZ, April 28, 1984

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Limited investigation · Final report
- Date: April 28, 1984, 16:30 local (23:30 UTC)
- Place: San Manuel, AZ
- Coordinates: 32.620964, -110.590141 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.6210&lon=-110.5901&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 2 minor, 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 24245
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX84LA272
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/24245/pdf
- Page: https://openairdocs.org/ntsb/LAX84LA272

## Sequence of events

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

- Overrun, landing - roll
  - weather condition - tailwind (contributing factor)
  - wrong runway - selected, pilot in command (cause)
  - pressure induced by others, pilot in command (contributing factor)
  - propeller system/accessories,reversing system - failure,partial (contributing factor)
  - airspeed - excessive, pilot in command (cause)
  - anti-ice/deice system,windshield - inoperative (contributing factor)
  - proper touchdown point - not attained, pilot in command (cause)
  - operation with known deficiencies in equipment - performed, pilot in command (cause)
  - precautionary landing - premature, pilot in command (contributing factor)
  - judgment - poor, pilot in command (cause)
  - procedures/directives - not followed, pilot in command (contributing factor)
- Main gear collapsed, landing - roll
  - landing gear,main gear - overload (contributing factor)

## Analysis

THE ACFT SKIDDED OFF THE DEPARTURE END OF THE RWY COLLAPSING THE LANDING GEAR IN A DITCH AS IT CAUGHT ON FIRE. THIS ACFTWAS ON A FERRY FLT AND HAD SEVERAL MECHANICAL PROBLEMS. AMONG THESE WAS THE PROP REVERSERS WHICH FAILED ON LANDING. THE ANTI-ICE/DE-ICE SYSTEMS FAILED TO WORK PROPERLY WHICH CONTRIBUTED TO THE NEED TO LAND SHORT OF DESTINATION. THE CO-PLT REPORTED THAT SHE DID NOT CHECK THE ANTI-ICING EQUIPMENT ON PRE-FLT. SHE WAS ALSO NOT QUALIFIED TO BE A CO-PLT ON THIS FLT. THE AIRSPEED INDICATORS WERE MALFUNCTIONING DURING LANDING. THE CREW MEMBERS ALL SAID THAT THEY KNEW THE AIRSPEED WAS MUCH TOO HIGH. THE CO-PLT SAID SHE COULD NOT UNDERSTAND HOW THE PLT THOUGHT HE COULD LAND AT SUCH A HIGH SPEED. SHE ALSO SAID HE CALLED FOR REVERSE AND APPLIED BRAKES TOO LATE IN THE ROLLOUT.

## Aircraft

- Registration: [N92860](https://openairdocs.org/deregistered/N92860-2013-06-05), registration cancelled 2013-06-05, S/N 44619, built 1953 (OpenAirDocs)
- Reported make and model: DOUGLAS DC-6A
- Registry model: [Douglas DC-6A](https://openairdocs.org/model/douglas-dc-6a) (registry code 3021706) (OpenAirDocs)
- Registry engine: [Pratt & Whitney R-2800 series](https://openairdocs.org/engine/pratt-whitney-r-2800-series) (registry code 52026, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 44619
- Engines: P&W P-2800 2100 horsepower reciprocating
- Damage: Destroyed
- Fire: On-Ground
- Flight: Ferry, Part 91 subpart F
- Registered owner: Intercontinental Acft Leasing
- Airworthiness certificate: Special, Special flight (Special)
- Departed: PIE, ST PETERSBURG, FL
- Destination: P10, CHANDLER, AZ
- Flight plan: IFR
- Airport: E77, San Manuel, runway 11, 4,200 × 50 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 30; airline transport, flight instructor; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: left; flight hours: 6,983 total, 3,200 in this make and model, 4,780 as pilot in command, 190 in the last 90 days, 58 in the last 30 days, 8 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 240° at 18 knots, gusting 25
- Visibility: 15 statute miles
- Lowest ceiling: 4,000 ft overcast
- Temperature: 36 °F
- Observed at: 1 nm away

## 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 19840428073769A](https://openairdocs.org/incident/19840428073769A), Apr 28, 1984: Doug DC6A, San Manuel, AZ, Destroyed. Aircraft landed long, ran off end of runway. Three propellers did not reverse. Destroyed by fire.

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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