 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of B727 on descent has altitude alert activate. They then return to assigned altitude.
| Attributes | |
| ACN | 392688 |
| Time | |
| Date | 199801 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : rab |
| State Reference | FO |
| Altitude | msl bound lower : 25700 msl bound upper : 26000 |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : mhtg |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Route In Use | enroute : atlantic |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 392688 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 392690 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | vertical : 2000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
ATC facility: cenamer control. Location: rab 30 DME. We were with cenamer control arriving into gua. We departed FL280 for FL260 as cleared by cenamer control. The first officer was flying. I was busy tuning and identing frequency. The altitude warning went off. I looked up at altimeter to see that we were passing FL257. The first officer immediately started ascent back to FL260. Cenamer advised us to climb to FL260. We did show traffic climbing out of gua at about 2000 ft below us and about 10 mi off our left. In order to have avoided this altitude bust, I should have directed my attention more to the altimeter when we first received our 700 ft warning after I called out 270 degrees for 260 degrees. We also had had a hard time understanding the radio xmissions from cenamer due to poor radio quality. Supplemental information from acn 392690: the controller was difficult to understand. Traffic was called out and I was distraction looking for the traffic and trying to hear/understand the radio xmissions. It did not appear that there was any loss of separation. Supplemental information from acn 392689: cenamer xmissions were strong but very garbled. From initial descent, with all 3 of us listening intently, we had to ask for several repeats on clrncs and frequencys.
Original NASA ASRS Text
Title: FLC OF B727 ON DSCNT HAS ALT ALERT ACTIVATE. THEY THEN RETURN TO ASSIGNED ALT.
Narrative: ATC FACILITY: CENAMER CTL. LOCATION: RAB 30 DME. WE WERE WITH CENAMER CTL ARRIVING INTO GUA. WE DEPARTED FL280 FOR FL260 AS CLRED BY CENAMER CTL. THE FO WAS FLYING. I WAS BUSY TUNING AND IDENTING FREQ. THE ALT WARNING WENT OFF. I LOOKED UP AT ALTIMETER TO SEE THAT WE WERE PASSING FL257. THE FO IMMEDIATELY STARTED ASCENT BACK TO FL260. CENAMER ADVISED US TO CLB TO FL260. WE DID SHOW TFC CLBING OUT OF GUA AT ABOUT 2000 FT BELOW US AND ABOUT 10 MI OFF OUR L. IN ORDER TO HAVE AVOIDED THIS ALT BUST, I SHOULD HAVE DIRECTED MY ATTN MORE TO THE ALTIMETER WHEN WE FIRST RECEIVED OUR 700 FT WARNING AFTER I CALLED OUT 270 DEGS FOR 260 DEGS. WE ALSO HAD HAD A HARD TIME UNDERSTANDING THE RADIO XMISSIONS FROM CENAMER DUE TO POOR RADIO QUALITY. SUPPLEMENTAL INFO FROM ACN 392690: THE CTLR WAS DIFFICULT TO UNDERSTAND. TFC WAS CALLED OUT AND I WAS DISTR LOOKING FOR THE TFC AND TRYING TO HEAR/UNDERSTAND THE RADIO XMISSIONS. IT DID NOT APPEAR THAT THERE WAS ANY LOSS OF SEPARATION. SUPPLEMENTAL INFO FROM ACN 392689: CENAMER XMISSIONS WERE STRONG BUT VERY GARBLED. FROM INITIAL DSCNT, WITH ALL 3 OF US LISTENING INTENTLY, WE HAD TO ASK FOR SEVERAL REPEATS ON CLRNCS AND FREQS.
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.