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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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| Attributes | |
| ACN | 396879 |
| Time | |
| Date | 199803 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zoa |
| State Reference | CA |
| Altitude | msl bound lower : 34700 msl bound upper : 35000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude cruise other other |
| Route In Use | enroute : on vectors enroute airway : zoa |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 6000 flight time type : 400 |
| ASRS Report | 396879 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : critical altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : declared emergency flight crew : regained aircraft control |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
Narrative:
At approximately FL250 climbing to FL350, clearance was given to cross teede at FL350. Pms showed we should be at FL350 5 mi prior. As we continued the climb, the pms showed us getting behind on making the restr. At about 10 mi out and 2000 ft low, I took the aircraft off pms/autoplt and traded airspeed for altitude (.84 mach to approximately .80 mach). We were within 300 ft passing the fix. I should have realized it would be tight about 20 mi sooner. Then after leveling at FL350 the #4 engine flamed out. We declared an emergency and requested lower. As sf radio coordinated, I deviated from FL350 to keep the speed above .80 mach and the operating engines' egt's below the yellow range. We were about 700 ft low when we finally got a clearance for FL280.
Original NASA ASRS Text
Title: B747 ACFT IN CLB WAS 300 FT LOW MEETING XING RESTR AND SHORTLY AFTER LEVELING THE #4 ENG FLAMED OUT. EMER DECLARED.
Narrative: AT APPROX FL250 CLBING TO FL350, CLRNC WAS GIVEN TO CROSS TEEDE AT FL350. PMS SHOWED WE SHOULD BE AT FL350 5 MI PRIOR. AS WE CONTINUED THE CLB, THE PMS SHOWED US GETTING BEHIND ON MAKING THE RESTR. AT ABOUT 10 MI OUT AND 2000 FT LOW, I TOOK THE ACFT OFF PMS/AUTOPLT AND TRADED AIRSPD FOR ALT (.84 MACH TO APPROX .80 MACH). WE WERE WITHIN 300 FT PASSING THE FIX. I SHOULD HAVE REALIZED IT WOULD BE TIGHT ABOUT 20 MI SOONER. THEN AFTER LEVELING AT FL350 THE #4 ENG FLAMED OUT. WE DECLARED AN EMER AND REQUESTED LOWER. AS SF RADIO COORDINATED, I DEVIATED FROM FL350 TO KEEP THE SPD ABOVE .80 MACH AND THE OPERATING ENGINES' EGT'S BELOW THE YELLOW RANGE. WE WERE ABOUT 700 FT LOW WHEN WE FINALLY GOT A CLRNC FOR FL280.
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.