PA31T pilot reports high turbine temperature and successful engine shutdown; with secondary electric...

Attributes
ACN	767185
Time
Date	200712
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 18000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	general aviation : corporate
Make Model Name	PA-31T Cheyenne II
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : cfi pilot : atp
Experience	flight time last 90 days : 40 flight time total : 8000 flight time type : 1700
ASRS Report	767185
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : diverted to another airport flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Weather Aircraft
Primary Problem	Ambiguous

Narrative:

I was on an IFR flight plan from ZZZ. The right engine inter-stage turbine temperature (itt) was reading a little hot. I then pulled back the power lever to reduce the temperature. The temperature remained high. I contacted center and requested a clearance back to ZZZ. I turned around to return to ZZZ after getting clearance. The itt continued to climb; so I did a precautionary shutdown of the right engine. During this event the left engine generator went off line while I was trying to reduce the electrical load. I attempted to get the generator back on line with no success and was flying at night with the aircraft battery only. While I attempted to contact center the battery went dead. Now I have no radio contact. I deviated from the assigned altitude by +/-600 ft while performing these procedures. Knowing that the local area had overcast WX conditions; and considering my emergency situation; I maintained VFR status and diverted to ZZZ1 where WX conditions were clear with good visibility; and the runways are long and brightly lighted. Callback conversation with reporter revealed the following information: the aircraft departed in icing conditions and all anti-ice systems were operating at the time the engine was shut down and were not turned off before an overload occurred. A hand-held GPS unit was used to navigate to the diversion airport and performed flawlessly. Post flight inspection revealed a mechanical failure of the fuel control had occurred producing maximum power fuel flow and then some.

Original NASA ASRS Text

Title: PA31T PILOT REPORTS HIGH TURBINE TEMPERATURE AND SUCCESSFUL ENGINE SHUTDOWN; WITH SECONDARY ELECTRICAL FAILURES RESULTING IN TOTAL ELECTRICAL FAILURE AND DIVERSION TO VMC AIRPORT.

Narrative: I WAS ON AN IFR FLT PLAN FROM ZZZ. THE R ENG INTER-STAGE TURBINE TEMP (ITT) WAS READING A LITTLE HOT. I THEN PULLED BACK THE PWR LEVER TO REDUCE THE TEMP. THE TEMP REMAINED HIGH. I CONTACTED CTR AND REQUESTED A CLRNC BACK TO ZZZ. I TURNED AROUND TO RETURN TO ZZZ AFTER GETTING CLRNC. THE ITT CONTINUED TO CLB; SO I DID A PRECAUTIONARY SHUTDOWN OF THE R ENG. DURING THIS EVENT THE L ENG GENERATOR WENT OFF LINE WHILE I WAS TRYING TO REDUCE THE ELECTRICAL LOAD. I ATTEMPTED TO GET THE GENERATOR BACK ON LINE WITH NO SUCCESS AND WAS FLYING AT NIGHT WITH THE ACFT BATTERY ONLY. WHILE I ATTEMPTED TO CONTACT CTR THE BATTERY WENT DEAD. NOW I HAVE NO RADIO CONTACT. I DEVIATED FROM THE ASSIGNED ALT BY +/-600 FT WHILE PERFORMING THESE PROCS. KNOWING THAT THE LCL AREA HAD OVCST WX CONDITIONS; AND CONSIDERING MY EMER SITUATION; I MAINTAINED VFR STATUS AND DIVERTED TO ZZZ1 WHERE WX CONDITIONS WERE CLR WITH GOOD VISIBILITY; AND THE RWYS ARE LONG AND BRIGHTLY LIGHTED. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE ACFT DEPARTED IN ICING CONDITIONS AND ALL ANTI-ICE SYSTEMS WERE OPERATING AT THE TIME THE ENGINE WAS SHUT DOWN AND WERE NOT TURNED OFF BEFORE AN OVERLOAD OCCURRED. A HAND-HELD GPS UNIT WAS USED TO NAVIGATE TO THE DIVERSION ARPT AND PERFORMED FLAWLESSLY. POST FLIGHT INSPECTION REVEALED A MECHANICAL FAILURE OF THE FUEL CONTROL HAD OCCURRED PRODUCING MAX POWER FUEL FLOW AND THEN SOME.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

PA31T pilot reports high turbine temperature and successful engine shutdown; with secondary electrical failures resulting in total electrical failure and diversion to VMC airport.