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Flight crew, flying an MD90, transposes assigned heading information for altitude assignment. ARTCC controller intervenes to reassign interim altitude. Flight crew distraction with airborne route clearance and same number usage, but different application.
| Attributes | |
| ACN | 397319 |
| Time | |
| Date | 199803 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : gmn |
| State Reference | CA |
| Altitude | msl bound lower : 23000 msl bound upper : 26000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla tower : ict |
| Operator | general aviation : personal |
| Make Model Name | MD-90 Series (DC-9-90) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | arrival other enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | other other : other pilot : atp |
| Experience | flight time last 90 days : 40 flight time total : 14000 flight time type : 14000 |
| ASRS Report | 397319 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : cfi pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 40 flight time total : 13000 flight time type : 3000 |
| ASRS Report | 397320 |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance other spatial deviation |
| 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:
Flight plan filed: lgb..fim.J1.ave.PNX2.oak. Clearance received radar vectors..lax..gmn-ave as filed. Lax departure cleared us from 9000 ft to FL230 direct gmn. Then cleared FL310 (and/or heading 310 degrees) after gorman. We questioned FL310? It was confirmed FL310 and we started climb. In the midst of this, we changed to ZLA and told gmn..bsr..sausalito (oakland landing southeast). Over gmn we started turn toward bsr and continued climb. Center asked 'aircraft X, where are you going? Are you on a 310 degree heading?' we replied direct bsr, but we were turning to 310 degree heading now. He replied, 'stop your climb.' we did. He later cleared us to FL310. There was confusion with similar altitudes and headings, FL310 versus 310 degrees and a routing change. The other pilot has done most of his flying on east coast and was not as familiar with west coast locations. We should have been more assertive in confirming 'heading' versus 'altitude' and also more alert to 'did we hear the clearance' versus 'did we think we heard the clearance?' supplemental information from acn 397320: we were en route and climbing as filed. Center told us to stop climb at FL260. A question arose as to FL310 or heading 310 degrees. Within 3 mins of this occurrence we were cleared to climb FL310.
Original NASA ASRS Text
Title: FLT CREW, FLYING AN MD90, TRANSPOSES ASSIGNED HEADING INFO FOR ALT ASSIGNMENT. ARTCC CTLR INTERVENES TO REASSIGN INTERIM ALT. FLC DISTR WITH AIRBORNE RTE CLRNC AND SAME NUMBER USAGE, BUT DIFFERENT APPLICATION.
Narrative: FLT PLAN FILED: LGB..FIM.J1.AVE.PNX2.OAK. CLRNC RECEIVED RADAR VECTORS..LAX..GMN-AVE AS FILED. LAX DEP CLRED US FROM 9000 FT TO FL230 DIRECT GMN. THEN CLRED FL310 (AND/OR HDG 310 DEGS) AFTER GORMAN. WE QUESTIONED FL310? IT WAS CONFIRMED FL310 AND WE STARTED CLB. IN THE MIDST OF THIS, WE CHANGED TO ZLA AND TOLD GMN..BSR..SAUSALITO (OAKLAND LNDG SE). OVER GMN WE STARTED TURN TOWARD BSR AND CONTINUED CLB. CTR ASKED 'ACFT X, WHERE ARE YOU GOING? ARE YOU ON A 310 DEG HDG?' WE REPLIED DIRECT BSR, BUT WE WERE TURNING TO 310 DEG HDG NOW. HE REPLIED, 'STOP YOUR CLB.' WE DID. HE LATER CLRED US TO FL310. THERE WAS CONFUSION WITH SIMILAR ALTS AND HEADINGS, FL310 VERSUS 310 DEGS AND A ROUTING CHANGE. THE OTHER PLT HAS DONE MOST OF HIS FLYING ON EAST COAST AND WAS NOT AS FAMILIAR WITH WEST COAST LOCATIONS. WE SHOULD HAVE BEEN MORE ASSERTIVE IN CONFIRMING 'HEADING' VERSUS 'ALT' AND ALSO MORE ALERT TO 'DID WE HEAR THE CLRNC' VERSUS 'DID WE THINK WE HEARD THE CLRNC?' SUPPLEMENTAL INFO FROM ACN 397320: WE WERE ENRTE AND CLBING AS FILED. CTR TOLD US TO STOP CLB AT FL260. A QUESTION AROSE AS TO FL310 OR HDG 310 DEGS. WITHIN 3 MINS OF THIS OCCURRENCE WE WERE CLRED TO CLB FL310.
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.