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An air carrier PIC is left with the impression that their flight was cleared to 10000 ft versus 11000 ft by ZHU controller near iah, tx.
| Attributes | |
| ACN | 448209 |
| Time | |
| Date | 199909 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : tnv.vortac |
| State Reference | TX |
| Altitude | msl bound lower : 10000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu.artcc tracon : i90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude descent : approach |
| Route In Use | 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 : 240 flight time total : 16000 flight time type : 5000 |
| ASRS Report | 448209 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude inflight encounter : weather non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather ATC Human Performance |
| Primary Problem | Ambiguous |
Narrative:
While descending for approach to iah, center gave us a crossing restr of 11000 ft at 250 KTS southeast of navasota (tnv). I am quite sure he modified this to 10000 ft. I read back the new altitude, which I believe he confirmed, but when I checked in with approach, the controller was surprised to find out I was at 10000 ft instead of 11000 ft. Now, 10000 ft is the normal altitude that we are handed over to approach control and I think that center may have made a mistake and gave us that out of habit. That day, things were irregular because of WX. We were being vectored and our normal arrival was not in use.
Original NASA ASRS Text
Title: AN ACR PIC IS LEFT WITH THE IMPRESSION THAT THEIR FLT WAS CLRED TO 10000 FT VERSUS 11000 FT BY ZHU CTLR NEAR IAH, TX.
Narrative: WHILE DSNDING FOR APCH TO IAH, CTR GAVE US A XING RESTR OF 11000 FT AT 250 KTS SE OF NAVASOTA (TNV). I AM QUITE SURE HE MODIFIED THIS TO 10000 FT. I READ BACK THE NEW ALT, WHICH I BELIEVE HE CONFIRMED, BUT WHEN I CHKED IN WITH APCH, THE CTLR WAS SURPRISED TO FIND OUT I WAS AT 10000 FT INSTEAD OF 11000 FT. NOW, 10000 FT IS THE NORMAL ALT THAT WE ARE HANDED OVER TO APCH CTL AND I THINK THAT CTR MAY HAVE MADE A MISTAKE AND GAVE US THAT OUT OF HABIT. THAT DAY, THINGS WERE IRREGULAR BECAUSE OF WX. WE WERE BEING VECTORED AND OUR NORMAL ARR WAS NOT IN USE.
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.