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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A B727 first officer turns off the autoplt to make a level turn heading change. In the process he loses 400 ft. Altitude warning and controller step in to rectify the situation. Captain was on a frequency change.
| Attributes | |
| ACN | 396600 |
| Time | |
| Date | 199803 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : ord |
| State Reference | IL |
| Altitude | msl bound lower : 6600 msl bound upper : 7000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : ord |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other cruise other |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 120 flight time total : 3200 flight time type : 180 |
| ASRS Report | 396600 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 10650 flight time type : 1964 |
| ASRS Report | 396945 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : became reoriented other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Level 7000 ft. First officer kicked off autoplt and turned right to 250 degrees. Captain switched frequency, looked up, saw altitude loss. Controller asked our altitude, '6600 ft.' said we were 'climbing back up,' he said, 'you're ok.' supplemental information from acn 396945: on approach to ord, controller gave us 250 degree heading and frequency change. I switched to approach control. As I switched, first officer selected autoplt off and a second later I heard altitude deviation horn. Looked up, lost 400 ft. Just as I pushed power up and said 'altitude,' approach controller asked our altitude. Gave us another heading for ILS approach. First officer was ex-military and hadn't flown much. First officer seat was his first assignment at air carrier. I briefed, 'in the future it is customary to inform other pilot what is being turned off or on.'
Original NASA ASRS Text
Title: A B727 FO TURNS OFF THE AUTOPLT TO MAKE A LEVEL TURN HDG CHANGE. IN THE PROCESS HE LOSES 400 FT. ALT WARNING AND CTLR STEP IN TO RECTIFY THE SIT. CAPT WAS ON A FREQ CHANGE.
Narrative: LEVEL 7000 FT. FO KICKED OFF AUTOPLT AND TURNED R TO 250 DEGS. CAPT SWITCHED FREQ, LOOKED UP, SAW ALT LOSS. CTLR ASKED OUR ALT, '6600 FT.' SAID WE WERE 'CLBING BACK UP,' HE SAID, 'YOU'RE OK.' SUPPLEMENTAL INFO FROM ACN 396945: ON APCH TO ORD, CTLR GAVE US 250 DEG HDG AND FREQ CHANGE. I SWITCHED TO APCH CTL. AS I SWITCHED, FO SELECTED AUTOPLT OFF AND A SECOND LATER I HEARD ALTDEV HORN. LOOKED UP, LOST 400 FT. JUST AS I PUSHED PWR UP AND SAID 'ALT,' APCH CTLR ASKED OUR ALT. GAVE US ANOTHER HDG FOR ILS APCH. FO WAS EX-MIL AND HADN'T FLOWN MUCH. FO SEAT WAS HIS FIRST ASSIGNMENT AT ACR. I BRIEFED, 'IN THE FUTURE IT IS CUSTOMARY TO INFORM OTHER PLT WHAT IS BEING TURNED OFF OR ON.'
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.