- Date
- September 3, 2006, 21:00 local (Sep 4, 2006, 05:00 UTC)
- Place
- Delta Junction, AK
- Injuries
- 1 minor
- Damage
- Substantial damage
- Phase of flight
- Approach
- Aircraft
- N5090FMcNabb Bushmaster
- Weather
- Visual (VMC) · Dusk
- Status
- Completed · report May 29, 2007
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- Parties
- FAA-AL-FAI FSDO 01
- Case key
- 64465
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
Probable cause
An electrical short that disabled the electronic ignition system of the airplane's engine during the final approach phase for landing, which resulted in a forced landing and collision with high vegetation. A factor contributing to the accident was the failure of the pilot to maintain proper altitude in the landing pattern to reach the runway during the forced landing.
Sequence of events
NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.
Analysis
The commercial certificated pilot was accumulating flight hours on an experimental airplane for the builder, as part of a Title 14, CFR Part 91 flight test period to comply with the experimental type certificate. The airplane's engine was an automotive, Ford 3.8L, V-6. It was equipped with an electronic ignition system. After 1.25 hours of flight time, the pilot was on final approach for landing, and when he turned on the airplane's landing light, the engine lost power. He was unable to restart the engine and descended into high vegetation, about 200 feet short of the runway. The airplane received structural damage to the wings and landing gear. An FAA inspector examined the airplane at the accident site. He found an electrical short in the landing light system. The inspector indicated that the electrical short also disabled the electronic ignition system on the engine.
Factual narrative
On September 3, 2006, about 2100 Alaska daylight time, a tundra tire-equipped amateur built experimental McNabb Javelin Bushmaster airplane, N5090F, sustained substantial damage following a forced landing and collision with terrain, at the Delta Junction Airport, Delta Junction, Alaska. The airplane was being operated by the pilot as a visual flight rules (VFR) local area personal flight under Title 14, CFR Part 91, when the accident occurred. The flight originated at the Delta Junction Airport about 1920. The commercial certificated pilot, the sole occupant, received minor injuries. Visual meteorological conditions prevailed, and no flight plan was filed.
During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on September 3, the pilot reported that he was accumulating flight hours on the airplane for the builder, as part of a 40 hour flight test period to comply with an experimental type certificate. The pilot said that after 1.25 hours of flight time, he was on final approach for landing on runway 7. He said that when he turned on the airplane's landing light, the engine lost power. He was unable to restart the engine and descended into high vegetation, about 200 feet short of the runway. The airplane received structural damage to the wings and landing gear.
The airplane's engine was an automotive, Ford 3.8L, V-6. It was equipped with an electronic ignition system. An FAA inspector, Fairbanks Flight Standards District Office (FSDO), Fairbanks, Alaska, reported that he examined the airplane at the accident site. He found an electrical short in the landing light system. The inspector indicated that the electrical short also disabled the electronic ignition system on the engine.
Aircraft
- Registration
- N5090F
- Reported as
- McNabb Bushmaster
- Category
- Airplane, amateur-built
- Serial number
- 001
- Airframe hours
- 10
- Engine
- Ford 3.8 L, 230 horsepower, reciprocating
- Damage
- Substantial damage
- Flight
- Personal · Part 91
- Operator
- Timothy D. Smithen
- Registered owner
- Adam McNabb
- Airworthiness certificate
- Special, Experimental (Special)
- Last inspection
- Condition · August 1, 2006
- Departed
- D66 · Delta Junction, AK
- Airport
- D66 · Delta Junction, runway 07, 2,400 × 50 ft, gravel
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
Flight crew
As NTSB recorded them. NTSB leaves out names.
- Role
- Pilot
- Age
- 36
- Injuries
- Minor
- Certificate
- Commercial
- Airplane ratings
- Single-engine land
- Instrument ratings
- Airplane
- Medical
- Class 2, Without waivers/limitations
- Last flight review
- June 1, 2006
- Seat
- Left
- Flight hours
- 1,000 total · 10 in this make and model · 700 as pilot in command · 12 in the last 90 days · 10 in the last 30 days · 2 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Dusk
- Wind
- 75° at 3 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 6,500 ft overcast
- Temperature
- 55 °F, dew point 37 °F
- Altimeter
- 30.04 inHg
- Observed at
- PABI, 10 nm away