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A lockheed hercules freight carrier deviated from an assigned altitude when the first officer (PNF) left the cockpit for a break.
| Attributes | |
| ACN | 299244 |
| Time | |
| Date | 199503 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : bne |
| State Reference | FO |
| Altitude | msl bound lower : 24000 msl bound upper : 25500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : lfff |
| Operator | common carrier : air carrier |
| Make Model Name | Hercules (C-130) |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | enroute airway : lfff |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : instrument pilot : atp pilot : flight engineer pilot : commercial |
| Experience | flight time last 90 days : 197 flight time total : 17000 flight time type : 2100 |
| ASRS Report | 299244 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After leveling off at FL240, I told the captain that I was leaving my flight station for physiological reasons. As I got to the cargo bay, my body got real light from a negative G load imposed on the aircraft. By the time I got to the flight deck and checked the altimeter we were 1500 ft above our assigned altitude and descending 2800 FPM. I climbed into the seat and asked the captain what happened. He said 'I guess the aircraft got off our altitude.' our autoplt had not been svcable for the last 3 days.
Original NASA ASRS Text
Title: A LOCKHEED HERCULES FREIGHT CARRIER DEVIATED FROM AN ASSIGNED ALT WHEN THE FO (PNF) LEFT THE COCKPIT FOR A BREAK.
Narrative: AFTER LEVELING OFF AT FL240, I TOLD THE CAPT THAT I WAS LEAVING MY FLT STATION FOR PHYSIOLOGICAL REASONS. AS I GOT TO THE CARGO BAY, MY BODY GOT REAL LIGHT FROM A NEGATIVE G LOAD IMPOSED ON THE ACFT. BY THE TIME I GOT TO THE FLT DECK AND CHKED THE ALTIMETER WE WERE 1500 FT ABOVE OUR ASSIGNED ALT AND DSNDING 2800 FPM. I CLBED INTO THE SEAT AND ASKED THE CAPT WHAT HAPPENED. HE SAID 'I GUESS THE ACFT GOT OFF OUR ALT.' OUR AUTOPLT HAD NOT BEEN SVCABLE FOR THE LAST 3 DAYS.
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.