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An air carrier B737 altitude deviation during an approach into hou. Approach controller catches error and sends flight back to previously assigned altitude.
| Attributes | |
| ACN | 398880 |
| Time | |
| Date | 199804 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : hou |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iah |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | descent : approach |
| Route In Use | arrival other enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 7500 flight time type : 3000 |
| ASRS Report | 398880 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On a vectored descent for approach into hou, we were cleared out of 6000 to 4000 ft MSL. I read back the clearance and we started a descent. Radio traffic was heavy, the controller was very busy. Passing 5000 ft MSL, the controller issued our altitude, I read back 5000 ft. He then said he had told us to maintain 6000 ft. I acknowledged the clearance and the captain climbed back up to 6000 ft. Nothing else of the event was mentioned and the rest of the flight was uneventful.
Original NASA ASRS Text
Title: AN ACR B737 ALTDEV DURING AN APCH INTO HOU. APCH CTLR CATCHES ERROR AND SENDS FLT BACK TO PREVIOUSLY ASSIGNED ALT.
Narrative: ON A VECTORED DSCNT FOR APCH INTO HOU, WE WERE CLRED OUT OF 6000 TO 4000 FT MSL. I READ BACK THE CLRNC AND WE STARTED A DSCNT. RADIO TFC WAS HVY, THE CTLR WAS VERY BUSY. PASSING 5000 FT MSL, THE CTLR ISSUED OUR ALT, I READ BACK 5000 FT. HE THEN SAID HE HAD TOLD US TO MAINTAIN 6000 FT. I ACKNOWLEDGED THE CLRNC AND THE CAPT CLBED BACK UP TO 6000 FT. NOTHING ELSE OF THE EVENT WAS MENTIONED AND THE REST OF THE FLT WAS UNEVENTFUL.
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.