NTSB Identification: SEA89FA118.
The docket is stored on NTSB microfiche number 41028.
Accident occurred Friday, June 23, 1989 in BREMERTON, WA
Probable Cause Approval Date: 04/14/1992
Aircraft: COLONIAL C-1, registration: N260B
Injuries: 1 Fatal,1 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

ABOUT 9 MIN AFTER TAKEOFF, AS THE PLTS WERE MNVRG ON A LOCAL TRAINING FLT, THE ENG LOST POWER. AN EMERG LNDG WAS MADE IN THE ONLY AVAILABLE PLACE, A CLEAR CUT AREA OF AN EVERGREEN FOREST. DURING THE LNDG, THE ACFT COLLIDED WITH ROUGH TERRAIN & A STUMP. FUNCTIONAL TESTS REVEALED THAT BOTH MAGNETOS WOULD PRODUCE A SPARK AT AMBIENT TEMP, BUT THEY WOULD NOT OPERATE WHEN HEATED TO NORMAL OPERATING TEMP. BEFORE THIS FLT, THE 1957 MODEL ACFT HAD BEEN IN STORAGE FOR AN EXTDD PERIOD OF TIME. RECORDS SHOWED THAT AN ANNUAL INSPN HAD BEEN PERFORMED ON 4/3/87 AT 1294.3 HRS OF SVC. THE NEXT ANNUAL INSPN WAS JUST BEFORE THE ACDNT FLT AT 1294.8 HRS. THE COILS IN THE BENDIX S4LN-20 SERIES MAGNETOS INSTALLED IN THE ACFT WERE REQUIRED TO BE REPLACED BEFORE 2000 HRS TIME-IN-SVC IAW AD 73-07-04 (ISSUED IN 1973) & BENDIX SVC BUL #560A. THE AD HAD NOT BEEN COMPLIED WITH. NEITHER THE AD NOR THE SVC BUL SPECIFIED A CALENDAR TIME LIMIT FOR MANDATORY REPLACEMENT OF THE MAGNETO COILS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

MALFUNCTION OF BOTH MAGNETOS DUE TO DETERIORATION OF THE COILS, WHICH RESULTED IN THE LOSS OF ENGINE POWER. FACTORS RELATED TO THE ACCIDENT WERE: AN INADEQUATE AIRWORTHINESS DIRECTIVE (NO CALENDAR TIME LIMITS), AND THE LACK OF SUITABLE TERRAIN (ROUGH/UNEVEN) IN THE EMERGENCY LANDING AREA.

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