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PIC of S80 requests block of FL370 to FL390 for getting out of rough air. ARTCC radar controller questions flight crew as to the service ceiling of aircraft after flight crew had experienced an excursion up to FL375, exceeding its service ceiling altitude.
| Attributes | |
| ACN | 362030 |
| Time | |
| Date | 199703 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : eck |
| State Reference | MI |
| Altitude | msl bound lower : 37000 msl bound upper : 37500 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 362030 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| ASRS Report | 362029 |
| Events | |
| Anomaly | inflight encounter other non adherence : far non adherence other other anomaly other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : regained aircraft control other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Location: dkk-eck. A very rough ride reported by all aircraft. Center reported FL180 smoother but with significant headwinds although unable to give specifics. Due to limited fuel and a reported better ride at FL390-FL410 we received clearance to FL370. We were still being bounced but a far better ride than any other altitude. As a precaution for altitude bust block FL370-FL390 was received. For a short time the aircraft ballooned to FL375. All passenger were seated with seat belt sign on, no injuries reported. As we were descending to FL370 frequency change was issued whereupon center questioned MD80 service ceiling. FL370 was response but I failed to think that an explanation of FL375 was in order. Flight was conducted safely as possible. Communication with center on my part could have been enhanced.
Original NASA ASRS Text
Title: PIC OF S80 REQUESTS BLOCK OF FL370 TO FL390 FOR GETTING OUT OF ROUGH AIR. ARTCC RADAR CTLR QUESTIONS FLC AS TO THE SVC CEILING OF ACFT AFTER FLC HAD EXPERIENCED AN EXCURSION UP TO FL375, EXCEEDING ITS SVC CEILING ALT.
Narrative: LOCATION: DKK-ECK. A VERY ROUGH RIDE RPTED BY ALL ACFT. CTR RPTED FL180 SMOOTHER BUT WITH SIGNIFICANT HEADWINDS ALTHOUGH UNABLE TO GIVE SPECIFICS. DUE TO LIMITED FUEL AND A RPTED BETTER RIDE AT FL390-FL410 WE RECEIVED CLRNC TO FL370. WE WERE STILL BEING BOUNCED BUT A FAR BETTER RIDE THAN ANY OTHER ALT. AS A PRECAUTION FOR ALT BUST BLOCK FL370-FL390 WAS RECEIVED. FOR A SHORT TIME THE ACFT BALLOONED TO FL375. ALL PAX WERE SEATED WITH SEAT BELT SIGN ON, NO INJURIES RPTED. AS WE WERE DSNDING TO FL370 FREQ CHANGE WAS ISSUED WHEREUPON CTR QUESTIONED MD80 SVC CEILING. FL370 WAS RESPONSE BUT I FAILED TO THINK THAT AN EXPLANATION OF FL375 WAS IN ORDER. FLT WAS CONDUCTED SAFELY AS POSSIBLE. COM WITH CTR ON MY PART COULD HAVE BEEN ENHANCED.
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.