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A specially equipped C182 during military mission support had alternator failure resulting in the loss of all radios and other equipment so the pilot diverted to a nearby airport after squawking 7600 and 7700 for a green light landing.
| Attributes | |
| ACN | 1000865 |
| Time | |
| Date | 201203 |
| Local Time Of Day | 1801-2400 |
| Place | |
| Locale Reference | ZZZ.Airport |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Make Model Name | Skylane 182/RG Turbo Skylane/RG |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | VFR |
| Component | |
| Aircraft Component | AC Generator/Alternator |
| Person 1 | |
| Function | Captain |
| Qualification | Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Flight Engineer Flight Crew Instrument Flight Crew Multiengine |
| Experience | Flight Crew Last 90 Days 50 Flight Crew Total 13500 Flight Crew Type 1500 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical |
Narrative:
Flying a stc modified cessna 182 containing an added sensor ball for ir; E0; etc. Modification included upgraded engine; large alternator. Mission electrical load can be as high as 100 amps. Approximately 15 minutes after takeoff; an electrical surge of unknown origin caused alternator field failure and rapid battery drain. [I] first noticed FM communications radio failure; video microwave downlink failure; VHF am comm two failure; glass panel failure and comm one failure. [I] attempted blind transmission of NORDO status (one local aircraft heard transmission); transponder to 7600. Then [I had] internal light failure enroute airport (five miles away); transponder to 7700. [I] received green light from tower. Landed uneventfully and turned off runway and shutdown to await fire department response. No smoke or fire noted. Aircraft towed to ramp hanger and turned over to maintenance.
Original NASA ASRS Text
Title: A specially equipped C182 during military mission support had alternator failure resulting in the loss of all radios and other equipment so the pilot diverted to a nearby airport after squawking 7600 and 7700 for a green light landing.
Narrative: Flying a STC modified Cessna 182 containing an added sensor ball for IR; E0; etc. Modification included upgraded engine; large alternator. Mission electrical load can be as high as 100 AMPS. Approximately 15 minutes after takeoff; an electrical surge of unknown origin caused alternator field failure and rapid battery drain. [I] first noticed FM communications radio failure; video microwave downlink failure; VHF AM Comm Two failure; glass panel failure and Comm One failure. [I] attempted blind transmission of NORDO status (one local aircraft heard transmission); transponder to 7600. Then [I had] internal light failure enroute airport (five miles away); transponder to 7700. [I] received green light from Tower. Landed uneventfully and turned off runway and shutdown to await Fire Department response. No smoke or fire noted. Aircraft towed to ramp hanger and turned over to maintenance.
Data retrieved from NASA's ASRS site as of July 2013 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.