# NTSB LAX87LA322: Government Aircraft Fact Nomad 24A, N37808, Lanai, HI, September 2, 1987

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 1, 1987, 14:50 local (Sep 2, 1987, 00:50 UTC)
- Place: Lanai, HI
- Coordinates: 20.829954, -156.920684 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=20.8300&lon=-156.9207&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report April 24, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 25679
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=LAX87LA322
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/25679/pdf
- Page: https://openairdocs.org/ntsb/LAX87LA322

## Sequence of events

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

- Loss of engine power(total) - nonmechanical, cruise - normal
  - all engines
  - planning/decision - improper, pilot in command (cause)
  - engine instruments,fuel quantity gage - false indication (contributing factor)
  - fluid,fuel - exhaustion (cause)
- Forced landing, descent - emergency
- On ground/water collision with object, landing - roll
  - object - sign (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - dirt bank/rising embankment (contributing factor)

## Analysis

WHEN THE FLT WAS APRX 15 MI WEST OF LANAI ON A CARGO FLT FROM HONOLULU TO HILO, HI, THE PLT OBSERVED THE FUEL GAUGES OSCILLATING ERRATICALLY TOWARD THE LOW SIDE. HE DIVERTED TOWARD LANAI TO REFUEL. HOWEVER, WHEN THE FLT WAS ABT 9 MI WESTOF LANAI, THE LEFT ENG FLAMED OUT. THE PLT FEATHERED THE LEFT ENG, BUT SHORTLY THEREAFTER (ABOUT 2 MI WEST OF LANAI), THE RIGHT ENG FLAMED OUT. WITH BOTH PROPS FEATHERED, HE ELECTED TO LAND ON AN UPWARD SLOPING ROAD. DURING THE LANDING ROLL, THE PLANE'S LEFT WING TIP STRUCK A SIGNPOST & A DIRT BANK WHICH CAUSED THE PLANE TO PIVOT FURTHER LEFT & NOSE INTO THE EMBANKMENT. NO FUEL OR FUEL LEAKAGE WAS FOUND DURING A POST-ACDNT EXAM. WHEN 1ST CHECKED, THE LEFT OUTBOARD FUEL GAUGE INDCD 70 TO 80 LBS OF FUEL REMAINING. LATER, BOTH LEFT FUEL GAUGES HAD ZERO READINGS. THE RGT OUTBOARD & INBOARD FUEL GAUGES INDCD 25 & 20 LBS, RESPECTIVELY.

## Aircraft

- Registration: [N37808](https://openairdocs.org/deregistered/N37808-2007-08-13), registration cancelled 2007-08-13, S/N N24A-99, built 1980 (OpenAirDocs)
- Reported make and model: Government Aircraft Fact (GAF) NOMAD 24A
- Registry model: [Government Aircraft Factories N24A](https://openairdocs.org/model/government-aircraft-factories-n24a) (registry code 3880104) (OpenAirDocs)
- Registry engine: [Allison 250-B17 series](https://openairdocs.org/engine/allison-250-b17-series) (registry code 03017, turbo-prop) (OpenAirDocs)
- Category: Airplane
- Serial number: N24A-99F
- Airframe hours: 996
- Engines: ALLISON 250-B17C 385 horsepower turbo prop
- Damage: Substantial damage
- Flight: Part 135
- Operator: Inter Island Air
- Registered owner: Hughes Corporation
- Airworthiness certificate: Standard, Normal
- Last inspection: Continuous airworthiness, August 28, 1987, 24 hours before
- Departed: HNL, HONOLULU, HI
- Destination: HILO, HI
- Airport: LNY, Lanai

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 60; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 20,100 total, 35 in this make and model, 20 in the last 90 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Visibility: 15 statute miles
- Temperature: 81 °F
- Altimeter: 29.00 inHg
- Observed at: LNY, 2 nm away

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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