1988-05 · NASA ASRS report 87587
MIL SPC ALT DEVIATION OVERSHOT DURING CLIMB.
THE FLT WAS SCHEDULED AS A PLT TRAINER AND AIRLIFT FROM NAS GLENVIEW (NBU) TO NAS NHZ TO MSP AND RETURN. THERE WERE NUMEROUS ACFT DISCREPANCIES DURING PREFLT. TKOF WAS 45 MINS LATE. SHORTLY AFTER TKOF THE AUTOPLT FAILED (ONE OF THE P/F DISC). THE MISSION WOULD HAVE TO BE HAND FLOWN IN ENTIRETY. NO FURTHER PROBS TO NHZ. DEPARTED NBU XA30 ARRIVED NHZ XD30. DEPARTED NHZ TO MSP AT XE30. SHORTLY AFTER TKOF WE LOST THE ONLY EDC (DEPARTED WITH ONLY ONE) THAT REQUIRED A DSCNT TO 10000'. THE FLT CONTINUED TO MSP HAND FLOWN AROUND CUMULUS CLOUDS AND STORMS. FLT ARRIVED MSP XH30; 1 1/2 HRS LATE; AND REQUIRING FUEL (NOT ORIGINALLY PLANNED). FLT ATTEMPTED DEP AROUND I15. #3 ENG DURING START STAGNATED. SECOND ATTEMPT WAS A HOT START. BOTH STARTS WERE ATTEMPTED WITH A STRONG TAIL WIND. WE TRIED A THIRD TIME INTO THE WIND. WE GOT A GOOD START; BUT THE START VALVE FAILED TO CLOSE; REQUIRED AN EMER SHUTDOWN. WE RETURNED TO THE NAVY RAMP TO LOOK AT THE ENG. WE FELT THE START VALVE FAILED TO CLOSE BECAUSE OF EXCESS HEAT. WE ALLOWED THE ENG TO COOL TO AMBIENT. FOLLOWING START WAS OVERTEMP. TURNED ACFT INTO WIND MORE. NEXT START OK; BUT START VALVE WOULDN'T CLOSE AGAIN. MY ENGINEER (ALSO A JET ENG MECH) WANTED TO COOL THE ENG 1 MORE TIME AND ADJUST THE TEMP DATUM CTL AND TRY 1 MORE START. THIS START WAS SUCCESSFUL. WE DEPARTED MSP AT XK30; A COLD FRONT WAS APCHING; WINDY. TKOF WAS ABRUPT. LIGHT WT; COLD AND WINDY; ACFT CLBED AT A MUCH GREATER RATE THAN USUAL. DEP SID WAS MSP 2; CLB TO 5000' AND RV TO COURSE; RIGHT HDG. RIGHT AFTER LIFT OFF TWR SWITCHED US TO DEP AND THEY GAVE US A LEFT TURN TO 120 DEGS. WE DEPARTED RWY 29L. I FIXATED ON MY D/G AND ATTITUDE INDICATOR; FAILING TO SCAN THE ALTIMETER. WE WENT THROUGH 5000' TO 5800'. PASSING 5000' MY COPLT MADE A CALL TO DEP AND STATED PASSING 5000'. DEP ASKED WHAT ALT WE WERE CLBING TO. HE WASN'T THINKING ABOUT OUR CLRED ALT EITHER. THE SPC DOES NOT HAVE AN ALT ALERT SYS. BESIDES THE COPLT; THE F/E AND A COCKPIT OBSERVER WITH HEADPHONES ON. BOTH MISSED THE ALT DEVIATION. AFTER ARRESTING ASCENT WE STARTED A DSCNT TO 5000'. DEP STATED HE REGISTERED OUR ALT AT 5800' AND RECLRED US TO 17000'. HE CHANGED OUR FREQ AND MADE NO COMMENT ABOUT FURTHER ACTION. PREFLT FOR MISSION WAS XX00. DEVIATION OCCURRED AT XK30; 13 1/2 HRS LATER. THUS FAR THE MISSION WAS DIFFICULT; THE CREW WAS VERY TIRED. THE CREW EXPECTED TO STAY AT MSP MECHANICALLY DOWN. WHEN THE ACFT CAME UP THEIR EUPHORIA CAUSED THEM TO LET THEIR GUARD DOWN. BEING OVERTIRED CAUSED THE FAIL OF INSTRUMENT SCAN AND THE ABILITY OF THE CREW TO PROPERLY BACK UP THE PLT AT THE CTLS. THE FLT LANDED NBU AT XL45; END OF MISSION; NO FURTHER INCIDENT. THE EDC WAS RESERVICED AT MSP ALLOWING NORMAL PRESSURIZATION ON THE LAST LEG.
Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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