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An air carrier L1011-1 flight crew started a climb instead of the assigned descent when the captain selected VNAV mode of the autoplt and then became distracted with a briefing. Fortunately the flight crew had not reset the altitude alerter.
| Attributes | |
| ACN | 425160 |
| Time | |
| Date | 199812 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ord |
| State Reference | IL |
| Altitude | msl bound lower : 28000 msl bound upper : 28500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | L-1011-1 100/200/250 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : second officer |
| ASRS Report | 425160 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial |
| Experience | flight time last 90 days : 210 flight time total : 35000 flight time type : 1500 |
| ASRS Report | 425162 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Captain was in the process of briefing runway 32L ord. Chicago had been in flow control of the afternoon because of high winds. Present wind 320 degrees 20 KTS gusting to 28 KTS. The latest ATIS showed landing runway 27L ord and I informed the captain. They had been given a descent to FL240. Shortly after giving the ATIS I heard the altitude alert note. Captain and first officer reacted to stop ascent and continued descent to FL240. Supplemental information from acn 425162: I took my eyes off the airplane. I distracted the copilot by asking him to review the runway 27L approach. We heard the altitude warning note and corrected immediately. TCASII showed no conflicts. ATC did not bring altitude to my attention. Descent was initiated to FL240. No further problems. Altitude was between 250 ft and 500 ft.
Original NASA ASRS Text
Title: AN ACR L1011-1 FLC STARTED A CLB INSTEAD OF THE ASSIGNED DSCNT WHEN THE CAPT SELECTED VNAV MODE OF THE AUTOPLT AND THEN BECAME DISTRACTED WITH A BRIEFING. FORTUNATELY THE FLC HAD NOT RESET THE ALT ALERTER.
Narrative: CAPT WAS IN THE PROCESS OF BRIEFING RWY 32L ORD. CHICAGO HAD BEEN IN FLOW CTL OF THE AFTERNOON BECAUSE OF HIGH WINDS. PRESENT WIND 320 DEGS 20 KTS GUSTING TO 28 KTS. THE LATEST ATIS SHOWED LNDG RWY 27L ORD AND I INFORMED THE CAPT. THEY HAD BEEN GIVEN A DSCNT TO FL240. SHORTLY AFTER GIVING THE ATIS I HEARD THE ALT ALERT NOTE. CAPT AND FO REACTED TO STOP ASCENT AND CONTINUED DSCNT TO FL240. SUPPLEMENTAL INFO FROM ACN 425162: I TOOK MY EYES OFF THE AIRPLANE. I DISTRACTED THE COPLT BY ASKING HIM TO REVIEW THE RWY 27L APCH. WE HEARD THE ALT WARNING NOTE AND CORRECTED IMMEDIATELY. TCASII SHOWED NO CONFLICTS. ATC DID NOT BRING ALT TO MY ATTN. DSCNT WAS INITIATED TO FL240. NO FURTHER PROBS. ALT WAS BTWN 250 FT AND 500 FT.
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.