NTSB CAROL · Event
Event FTW86IA078
Registry · N109AA
FAA Aircraft Registry record.
Make / Model
AVIAT AIRCRAFT INC A-1B
Year of manufacture
2007
Engine
LYCOMING O-360-A1P (180 hp)
Seats / Engines
2 seats · 1 engine
Last airworthiness date
20070914
ADS-B equipped
Yes — Mode-S A02624
Registrant of record
LIBERTY AVIATION LLC
Source: FAA Aircraft Registry (releasable master file).
Aircraft involved
Factual narrative
THE CREW STATED THAT DURING AN ATTEMPTED START THE NO. 1 ENG FAILED TO GAIN IGNITION DURING THE PRESCRIBED 25 SEC LIMIT AND THAT THEY ABORTED THE START. SHORTLY THEREAFTER, GRND PERS REPORTED THAT THE ENG HAD DEVELOPED A TAIL PIPE FIRE. FOLLOWING EMERG PROCEDURES, THE FIRE PERSISTED AND THE CAPT ORDERED THE ACFT EVACUATED. FOUR PAX RECEIVED MINOR INJURIES. INVESTIGATION REVEALED THAT THE 'B' IGN SYS WAS INOP AND PLACARDED AS SUCH AND THAT THE 'A' SYS WAS FUNCTIONING NORMALLY. EXAMINATION REVEALED A SHORT IN THE 'B' SYS HARNESS BETWEEN THE EXCITER AND THE ING PLUG. FOLLOWING REPLACEMENT OF THE 'B' HARNESS, BOTH IGN SYS AND THE ENGINE PERFORMED NORMALLY. THE TAIL PIPE FIRE COULD BE LIT OFF FOLLOWING AN ATTEMPTED START ON THE 'B' SYS, WITH A SUBSEQUENT SECOND START OR SWITCH OVER TO THE 'A' SYS WITHOUT PURGING THE ENG OF THE INITIAL START FUEL. EITHER SEQUENCE WOULD RESULT IN TORCHING. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1986_FTW86IA078.txt.
Findings + structured fields enriched from FAA avall.mdb.
Full investigation docket on
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