Narrative:

On takeoff, the air driven generator (air driven generator) inadvertently deployed. Thinking we would have to return, the first officer (PNF) called ATC and accepted an instruction to make a left traffic pattern. Without thinking, I accepted the instruction to make a left traffic pattern and land. Unfortunately, we landed over maximum landing weight. CRM was not at peak performance and it was the first officer's birthday and I was feeling fatigued from a combination of factors. I found it difficult to function at the level required to consider all possible ramifications of a return to landing. Some crew performance indicators were either not recognized or ignored which could have idented the low CRM performance. Simply following the 'pre-brief' takeoff profile, the overweight landing would have been avoided. In the future, I plan to vary the delivery of the takeoff briefing to hopefully stimulate feedback from other crew members.

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Original NASA ASRS Text

Title: FLT CREW OF CL65 LANDS OVER MAX LNDG WT AT DTW WHEN AIR DRIVEN GENERATOR IMPROPERLY DEPLOYED ON TKOF. CREW MADE PRECIPITOUS DECISION TO LAND WITHOUT PROPER CONSIDERATION OF ALL PARAMETERS.

Narrative: ON TKOF, THE ADG (AIR DRIVEN GENERATOR) INADVERTENTLY DEPLOYED. THINKING WE WOULD HAVE TO RETURN, THE FO (PNF) CALLED ATC AND ACCEPTED AN INSTRUCTION TO MAKE A L TFC PATTERN. WITHOUT THINKING, I ACCEPTED THE INSTRUCTION TO MAKE A L TFC PATTERN AND LAND. UNFORTUNATELY, WE LANDED OVER MAX LNDG WT. CRM WAS NOT AT PEAK PERFORMANCE AND IT WAS THE FO'S BIRTHDAY AND I WAS FEELING FATIGUED FROM A COMBINATION OF FACTORS. I FOUND IT DIFFICULT TO FUNCTION AT THE LEVEL REQUIRED TO CONSIDER ALL POSSIBLE RAMIFICATIONS OF A RETURN TO LNDG. SOME CREW PERFORMANCE INDICATORS WERE EITHER NOT RECOGNIZED OR IGNORED WHICH COULD HAVE IDENTED THE LOW CRM PERFORMANCE. SIMPLY FOLLOWING THE 'PRE-BRIEF' TKOF PROFILE, THE OVERWT LNDG WOULD HAVE BEEN AVOIDED. IN THE FUTURE, I PLAN TO VARY THE DELIVERY OF THE TKOF BRIEFING TO HOPEFULLY STIMULATE FEEDBACK FROM OTHER CREW MEMBERS.

Data retrieved from NASA's ASRS site as of July 2007 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.