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An medium large transport aircraft descending in ZID airspace misses a communication regarding a crossing altitude. Flight crew did not hear clearance to cross the nabb intersection.
| Attributes | |
| ACN | 394337 |
| Time | |
| Date | 199802 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : abb |
| State Reference | IN |
| Altitude | msl bound lower : 11000 msl bound upper : 19000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time total : 10000 |
| ASRS Report | 394337 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 320 flight time total : 6800 flight time type : 2950 |
| ASRS Report | 394270 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Crossed nabb at FL190. We were queried by ZID if we had received clearance to cross abb at 11000 ft. We had not. We were asked to expedite to 11000 ft, which we did. No further problems. Supplemental information from acn 394270: on our next frequency change the controller asked us if we received a clearance to cross nabb at 11000 ft (a fix on the arrival). We were concerned since we had already passed nabb. We told the controller that we never received a clearance like that. The controller then gave us a descent to 11000 ft. There really was no concern in the controller's voice. The captain and I discussed the situation. He remembers, without a doubt, our clearance to FL190 and reading it back to the controller. Also, verbalizing it to me.
Original NASA ASRS Text
Title: AN MLG ACFT DSNDING IN ZID AIRSPACE MISSES A COM REGARDING A XING ALT. FLC DID NOT HEAR CLRNC TO CROSS THE NABB INTXN.
Narrative: CROSSED NABB AT FL190. WE WERE QUERIED BY ZID IF WE HAD RECEIVED CLRNC TO CROSS ABB AT 11000 FT. WE HAD NOT. WE WERE ASKED TO EXPEDITE TO 11000 FT, WHICH WE DID. NO FURTHER PROBS. SUPPLEMENTAL INFO FROM ACN 394270: ON OUR NEXT FREQ CHANGE THE CTLR ASKED US IF WE RECEIVED A CLRNC TO CROSS NABB AT 11000 FT (A FIX ON THE ARR). WE WERE CONCERNED SINCE WE HAD ALREADY PASSED NABB. WE TOLD THE CTLR THAT WE NEVER RECEIVED A CLRNC LIKE THAT. THE CTLR THEN GAVE US A DSCNT TO 11000 FT. THERE REALLY WAS NO CONCERN IN THE CTLR'S VOICE. THE CAPT AND I DISCUSSED THE SIT. HE REMEMBERS, WITHOUT A DOUBT, OUR CLRNC TO FL190 AND READING IT BACK TO THE CTLR. ALSO, VERBALIZING IT TO ME.
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.