20040409011699I

Incident

FAA incident report · Swrngn SA-226T · Telluride, CO · April 9, 2004

Date
April 9, 2004 · 17:40 local
Place
Telluride, CO
Airport
Telluride Regional Airport
Phase of flight
Normal Cruise
Operating rules
General operating rules (Part 91)
Operator
F9AA
Aircraft
N226SR
Reported as
Swrngn SA226T
People aboard
2
Fatal injuries
0
Pilot’s flight hours
14,600 total6,000 in this make and model150 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

(-23) On April 9, 2004, merlin N226SR was on an IFR flight plan enroute from santa ana, CA. To Telluride, CO. During the flight the right generator went off line and was reset to bring it back online. During the descent into Telluride, CO. The right generator failed again and could not be reset. The pilot continued for the loc/dme rwy 9 instrument approach. As the aircraft passed over cones VOR the pilot turned on the left pitot heat and the load meter went to high voltage and then to zero. The left generator went off line and could not be reset. The pilot elected to continue the approach on battery power. At approximately 6 miles from the airport the battery failed and the entire electrical system went dead. The pilot went missed approach using standby instrumentation on the co-pilots side of the instrument panel and was unable to transmit their intentions to denver center. During the missed approach the aircraft entered VFR conditions at which time the pilot maintained VFR conditions and diverted to delta, CO. The pilot landed safely at delta, CO. And contacted denver center via cell phone. During post-incident maintenance of the generators it was discovered that when the right generator failed the generator control unit also failed. The reason for the right generator failure was determined to be bearing failure. The left generator is still at maintenance and the reason for failure has not been disclosed. The battery was removed and charged with no apparent component malfunctions.

As the FAA filed it

(-23) ON APRIL 9, 2004, MERLIN N226SR WAS ON AN IFR FLIGHT PLAN ENROUTE FROM SANTA ANA, CA. TO TELLURIDE, CO. DURING THE FLIGHT THE RIGHT GENERATOR WENT OFF LINE AND WAS RESET TO BRING IT BACK ONLINE. DURING THE DESCENT INTO TELLURIDE, CO. THE RIGHT GENERATOR FAILED AGAIN AND COULD NOT BE RESET. THE PILOT CONTINUED FOR THE LOC/DME RWY 9 INSTRUMENT APPROACH. AS THE AIRCRAFT PASSED OVER CONES VOR THE PILOT TURNED ON THE LEFT PITOT HEAT AND THE LOAD METER WENT TO HIGH VOLTAGE AND THEN TO ZERO. THE LEFT GENERATOR WENT OFF LINE AND COULD NOT BE RESET. THE PILOT ELECTED TO CONTINUE THE APPROACH ON BATTERY POWER. AT APPROXIMATELY 6 MILES FROM THE AIRPORT THE BATTERY FAILED AND THE ENTIRE ELECTRICAL SYSTEM WENT DEAD. THE PILOT WENT MISSED APPROACH USING STANDBY INSTRUMENTATION ON THE CO-PILOTS SIDE OF THE INSTRUMENT PANEL AND WAS UNABLE TO TRANSMIT THEIR INTENTIONS TO DENVER CENTER. DURING THE MISSED APPROACH THE AIRCRAFT ENTERED VFR CONDITIONS AT WHICH TIME THE PILOT MAINTAINED VFR CONDITIONS AND DIVERTED TO DELTA, CO. THE PILOT LANDED SAFELY AT DELTA, CO. AND CONTACTED DENVER CENTER VIA CELL PHONE. DURING POST-INCIDENT MAINTENANCE OF THE GENERATORS IT WAS DISCOVERED THAT WHEN THE RIGHT GENERATOR FAILED THE GENERATOR CONTROL UNIT ALSO FAILED. THE REASON FOR THE RIGHT GENERATOR FAILURE WAS DETERMINED TO BE BEARING FAILURE. THE LEFT GENERATOR IS STILL AT MAINTENANCE AND THE REASON FOR FAILURE HAS NOT BEEN DISCLOSED. THE BATTERY WAS REMOVED AND CHARGED WITH NO APPARENT COMPONENT MALFUNCTIONS.

Other reports on N226SR · 1

Matched to the same aircraft by N-number and date.