An md-82 flight crew; distracted by malfunctioning AC power; failed to note the flight director had ...

Attributes
ACN	1027534
Time
Date	201208
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Aircraft 1
Make Model Name	MD-82
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Component
Aircraft Component	AC Generation
Person 1
Function	Pilot Not Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP)
Person 2
Function	Pilot Flying First Officer
Events
Anomaly	Aircraft Equipment Problem Critical Conflict Airborne Conflict Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Deviation - Track / Heading All Types

Narrative:

While climbing through 9;000 for 10;000 MSL on our cleared SID we experienced 'intermittent AC power interruptions'. The autopilot tripped off; we had numerous flashing cockpit annunciators; and the AC busses were cycling on and off. It took a few moments to sort out what was happening and to make sure we leveled at 10;000. As I was preparing to advise ATC 'unable RNAV' the controller cleared us 'direct to a fix on the SID'. He then asked us why we had swung wide on our turn. We explained what we were dealing with. This all happened in a very compact time period. The appropriate QRH procedure was complied with. The company should possibly consider hot weather implications for aging generator control and protection units. Temperature at takeoff was 40 C.

Original NASA ASRS Text

Title: An MD-82 flight crew; distracted by malfunctioning AC power; failed to note the Flight Director had defaulted to heading hold resulting in a deviation from their SID track.

Narrative: While climbing through 9;000 for 10;000 MSL on our cleared SID we experienced 'Intermittent AC Power Interruptions'. The autopilot tripped off; we had numerous flashing cockpit annunciators; and the AC busses were cycling on and off. It took a few moments to sort out what was happening and to make sure we leveled at 10;000. As I was preparing to advise ATC 'unable RNAV' the controller cleared us 'direct to a fix on the SID'. He then asked us why we had swung wide on our turn. We explained what we were dealing with. This all happened in a very compact time period. The appropriate QRH procedure was complied with. The company should possibly consider hot weather implications for aging Generator Control and Protection Units. Temperature at takeoff was 40 C.

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.

An md-82 flight crew; distracted by malfunctioning AC power; failed to note the flight director had defaulted to heading hold resulting in a deviation from their SID track.