37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Attributes | |
ACN | 501903 |
Time | |
Date | 200102 |
Day | Sat |
Local Time Of Day | 0001 To 0600 |
Place | |
Locale Reference | airport : atl.airport |
State Reference | GA |
Altitude | msl single value : 2500 |
Environment | |
Flight Conditions | IMC |
Weather Elements | Thunderstorm other |
Light | Night |
Aircraft 1 | |
Controlling Facilities | tracon : atl.tracon |
Operator | common carrier : air carrier |
Make Model Name | B767-300 and 300 ER |
Operating Under FAR Part | Part 121 |
Navigation In Use | ils localizer & glide slope : 9r other other vortac |
Flight Phase | landing : missed approach |
Route In Use | approach : instrument precision arrival : on vectors |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : atp |
Experience | flight time last 90 days : 140 flight time total : 10000 flight time type : 140 |
ASRS Report | 501903 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : atp |
Experience | flight time last 90 days : 120 flight time total : 8000 flight time type : 600 |
ASRS Report | 501680 |
Events | |
Anomaly | altitude deviation : overshoot non adherence : clearance |
Independent Detector | other flight crewa |
Resolutory Action | controller : issued new clearance flight crew : overrode automation flight crew : returned to assigned altitude |
Supplementary | |
Problem Areas | ATC Human Performance Weather Flight Crew Human Performance Airport |
Primary Problem | Flight Crew Human Performance |
Air Traffic Incident | Pilot Deviation |
Narrative:
A lot of thunderstorm activity in atl area. We were on final approach about 4 mi out. Thunderstorms in area caused wind shift at airport. We were going around for an approach to runway 27L. ATC issued go around instructions. The published missed approach altitude is 3500 ft. That is what we had in the MCP. During the missed, ATC issued 4000 ft and that was set in. Then ATC came back and said just go to 3500 ft. That was set in. We were in automatic go around. We were very light that night (only 8 passenger). When we shifted altitude, the autothrottles engaged in a higher power setting. Autoplt and autothrottles were immediately disconnected and an attempt to level off at newly assigned altitude was accomplished. We ballooned to 3800 ft and went back down to 3500 ft. I tried to level off without too much passenger discomfort. A great deal of forward pressure was needed. ATC made no comments and no reason for nonstandard missed approach altitude. The B767 automatic go around limits climb to no more than 2000 FPM. But with all the altitude changes, a disconnect was necessary. Our extremely light weight was also a contributor.
Original NASA ASRS Text
Title: B763 FLC OVERSHOOT ALT WHEN ISSUED MISSED APCH DUE TO ATL RWY CONFIGN CHANGE.
Narrative: A LOT OF TSTM ACTIVITY IN ATL AREA. WE WERE ON FINAL APCH ABOUT 4 MI OUT. TSTMS IN AREA CAUSED WIND SHIFT AT ARPT. WE WERE GOING AROUND FOR AN APCH TO RWY 27L. ATC ISSUED GAR INSTRUCTIONS. THE PUBLISHED MISSED APCH ALT IS 3500 FT. THAT IS WHAT WE HAD IN THE MCP. DURING THE MISSED, ATC ISSUED 4000 FT AND THAT WAS SET IN. THEN ATC CAME BACK AND SAID JUST GO TO 3500 FT. THAT WAS SET IN. WE WERE IN AUTO GAR. WE WERE VERY LIGHT THAT NIGHT (ONLY 8 PAX). WHEN WE SHIFTED ALT, THE AUTOTHROTTLES ENGAGED IN A HIGHER PWR SETTING. AUTOPLT AND AUTOTHROTTLES WERE IMMEDIATELY DISCONNECTED AND AN ATTEMPT TO LEVEL OFF AT NEWLY ASSIGNED ALT WAS ACCOMPLISHED. WE BALLOONED TO 3800 FT AND WENT BACK DOWN TO 3500 FT. I TRIED TO LEVEL OFF WITHOUT TOO MUCH PAX DISCOMFORT. A GREAT DEAL OF FORWARD PRESSURE WAS NEEDED. ATC MADE NO COMMENTS AND NO REASON FOR NONSTANDARD MISSED APCH ALT. THE B767 AUTO GAR LIMITS CLB TO NO MORE THAN 2000 FPM. BUT WITH ALL THE ALT CHANGES, A DISCONNECT WAS NECESSARY. OUR EXTREMELY LIGHT WT WAS ALSO A CONTRIBUTOR.
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.