Narrative:

Was given instruction to hold at boiler due to thunderstorm in chicago area. Had previously informed passenger, unable to land at meigs due to WX. Passenger became upset and irate and took out frustration on crew. Dealing with new clearance and turning up WX radar. Assessing fuel situation, stress became high. Consequently setting altimeter below 180 was missed. Level at 17000 controller said had us 600' low proper altimeter was 29.31. Thence corrected problem. This is an excellent example of how coping with additional stress not related to the specific operation of the aircraft (irate, drunk, critically sick passenger etc) can effect flight crew performance. I think this should be implemented in 135 flight training where the cockpit is open to the cabin and the flight crew must also take care of flight attendant responsibilities.

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Original NASA ASRS Text

Title: CHT SMT ALT DEVIATION OVERSHOT DURING DESCENT. PLT FAILED TO SET ALTIMETER PASSING TRANSITION LEVEL.

Narrative: WAS GIVEN INSTRUCTION TO HOLD AT BOILER DUE TO TSTM IN CHICAGO AREA. HAD PREVIOUSLY INFORMED PAX, UNABLE TO LAND AT MEIGS DUE TO WX. PAX BECAME UPSET AND IRATE AND TOOK OUT FRUSTRATION ON CREW. DEALING WITH NEW CLRNC AND TURNING UP WX RADAR. ASSESSING FUEL SITUATION, STRESS BECAME HIGH. CONSEQUENTLY SETTING ALTIMETER BELOW 180 WAS MISSED. LEVEL AT 17000 CTLR SAID HAD US 600' LOW PROPER ALTIMETER WAS 29.31. THENCE CORRECTED PROBLEM. THIS IS AN EXCELLENT EXAMPLE OF HOW COPING WITH ADDITIONAL STRESS NOT RELATED TO THE SPECIFIC OPERATION OF THE ACFT (IRATE, DRUNK, CRITICALLY SICK PAX ETC) CAN EFFECT FLT CREW PERFORMANCE. I THINK THIS SHOULD BE IMPLEMENTED IN 135 FLT TRAINING WHERE THE COCKPIT IS OPEN TO THE CABIN AND THE FLT CREW MUST ALSO TAKE CARE OF FLT ATTENDANT RESPONSIBILITIES.

Data retrieved from NASA's ASRS site as of August 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.