Serious incident Aerospatiale AS-355F1 N101UM, Sunday 26 January 1992

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Date:	Sunday 26 January 1992
Time:	20:28 LT
Type:	Aerospatiale AS-355F1
Owner/operator:	Corporate Jets Inc.
Registration:	N101UM
MSN:	5073
Year of manufacture:	1981
Total airframe hrs:	3387 hours
Engine model:	Allison 250-C20F
Fatalities:	Fatalities: 0 / Occupants: 4
Other fatalities:	0
Aircraft damage:	Minor
Category:	Serious incident
Location:	Lansing, MI - United States of America
Phase:	En route
Nature:	Unknown
Departure airport:	Ludington, MI (NONE)
Destination airport:	Ann Arbor, MI (M132)
Investigating agency:	NTSB
Confidence Rating:	Accident investigation report completed and information captured

Narrative:
THE PILOT OF THE INCIDENT HELICOPTER PERFORMED AN EMERGENCY LANDING AFTER HE SMELLED SMOKE AND THE BAGGAGE COMPARTMENT FIRE WARNING/SMOKE DETECTOR LIGHT ILLUMINATED. A POST INCIDENT INSPECTION REVEALED A FATIGUE FAILURE OF A UNION JOINING A FUEL PIPE ASSEMBLY TO THE EXTERIOR OF THE RIGHT (#2) ENGINE CASE.

Probable Cause: A FATIGUE FAILURE OF A FUEL SYSTEM LINE FITTING DURING CRUISE FLIGHT.

Accident investigation: