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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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An air carrier B767 flight crew failed to initiate descent to meet an assigned altitude crossing restr. The first officer (PF) programmed the FMC, but the check airman (PNF) failed to arm the altitude. The first officer did not notice that the altitude window had not been set. Altitude deviation altitude crossing restr undershot.
| Attributes | |
| ACN | 330030 |
| Time | |
| Date | 199603 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : gdm |
| State Reference | MA |
| Altitude | msl bound lower : 11000 msl bound upper : 24000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw tower : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| 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 : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 4000 flight time type : 4 |
| ASRS Report | 330030 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
I was first officer and PF on a flight from sfo-bos. It was my first leg of IOE in the B767, and my first line experience in glass cockpit. The WX as we neared bos was 1-3 mi visibility in moderate freezing rain. Company policy prohibits operations in moderate freezing rain, and these conditions prevailed throughout new england. While we were discussing where to land, ATC gave us a crossing restr of 11000 ft and 250 KTS at bronc. I put the restr in the FMC. The check airman, as PNF, was to put 11000 ft in the altitude window, but forgot to do it. I didn't notice the oversight as we discussed ATC's request to sidestep from runway 4R to runway 4L and WX minimums required, braking action reports, etc. I would estimate that approximately 5-10 mi west of bronc, ATC noticed we had not started descent and gave us a 360 degree heading. Work overload for the check airman was a contributing factor.
Original NASA ASRS Text
Title: AN ACR B767 FLC FAILED TO INITIATE DSCNT TO MEET AN ASSIGNED ALT XING RESTR. THE FO (PF) PROGRAMMED THE FMC, BUT THE CHK AIRMAN (PNF) FAILED TO ARM THE ALT. THE FO DID NOT NOTICE THAT THE ALT WINDOW HAD NOT BEEN SET. ALTDEV ALT XING RESTR UNDERSHOT.
Narrative: I WAS FO AND PF ON A FLT FROM SFO-BOS. IT WAS MY FIRST LEG OF IOE IN THE B767, AND MY FIRST LINE EXPERIENCE IN GLASS COCKPIT. THE WX AS WE NEARED BOS WAS 1-3 MI VISIBILITY IN MODERATE FREEZING RAIN. COMPANY POLICY PROHIBITS OPS IN MODERATE FREEZING RAIN, AND THESE CONDITIONS PREVAILED THROUGHOUT NEW ENGLAND. WHILE WE WERE DISCUSSING WHERE TO LAND, ATC GAVE US A XING RESTR OF 11000 FT AND 250 KTS AT BRONC. I PUT THE RESTR IN THE FMC. THE CHK AIRMAN, AS PNF, WAS TO PUT 11000 FT IN THE ALT WINDOW, BUT FORGOT TO DO IT. I DIDN'T NOTICE THE OVERSIGHT AS WE DISCUSSED ATC'S REQUEST TO SIDESTEP FROM RWY 4R TO RWY 4L AND WX MINIMUMS REQUIRED, BRAKING ACTION RPTS, ETC. I WOULD ESTIMATE THAT APPROX 5-10 MI W OF BRONC, ATC NOTICED WE HAD NOT STARTED DSCNT AND GAVE US A 360 DEG HDG. WORK OVERLOAD FOR THE CHK AIRMAN WAS A CONTRIBUTING FACTOR.
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.