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Flight crew missed crossing altitude restr due to reprogramming the computers and failing to monitor aircraft.
| Attributes | |
| ACN | 299960 |
| Time | |
| Date | 199503 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : vkz |
| State Reference | FL |
| Altitude | msl bound lower : 24000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zma tower : lga |
| Operator | common carrier : air carrier |
| Make Model Name | A320 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : commercial |
| Experience | flight time last 90 days : 160 flight time total : 22500 flight time type : 3000 |
| ASRS Report | 299960 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : became reoriented |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Cleared to cross heatt intersection at 16000 ft. Left FL290 in 'descent' mode of VNAV with a 16000 ft crossing programmed at heatt. We were advised to expect a different runway, so the first officer programmed the new runway in the mcdu while I got the new ATIS. I then sent the 'in-range' report and did the descent checklist. Passing FL240 I noticed we were no longer in VNAV and had 8 miles to heatt. We notified ATC, were reclred and vectored for approach. This is a perfect example of the A320's VNAV flaws, changing a runway drops all manually inserted xings without warning.
Original NASA ASRS Text
Title: FLC MISSED XING ALT RESTR DUE TO REPROGRAMMING THE COMPUTERS AND FAILING TO MONITOR ACFT.
Narrative: CLRED TO CROSS HEATT INTXN AT 16000 FT. LEFT FL290 IN 'DSCNT' MODE OF VNAV WITH A 16000 FT XING PROGRAMMED AT HEATT. WE WERE ADVISED TO EXPECT A DIFFERENT RWY, SO THE FO PROGRAMMED THE NEW RWY IN THE MCDU WHILE I GOT THE NEW ATIS. I THEN SENT THE 'IN-RANGE' RPT AND DID THE DSCNT CHKLIST. PASSING FL240 I NOTICED WE WERE NO LONGER IN VNAV AND HAD 8 MILES TO HEATT. WE NOTIFIED ATC, WERE RECLRED AND VECTORED FOR APCH. THIS IS A PERFECT EXAMPLE OF THE A320'S VNAV FLAWS, CHANGING A RWY DROPS ALL MANUALLY INSERTED XINGS WITHOUT WARNING.
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.