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Eastbound air carrier medium large transport cleared by ZID to FL280 when controller intended to clear the flight to FL270. Error detected by ARTCC 5 minutes after level at cruise altitude.
| Attributes | |
| ACN | 156232 |
| Time | |
| Date | 199009 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ape |
| State Reference | OH |
| Altitude | msl bound lower : 27000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid tracon : n90 |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors enroute airway : j80 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : private pilot : instrument pilot : flight engineer pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 180 flight time total : 10200 flight time type : 2500 |
| ASRS Report | 156232 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : overshoot non adherence : clearance non adherence : required legal separation other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Deviation other |
Narrative:
ZID controller cleared us to FL280. We read back clearance and climbed to FL280. Controller did not dispute clearance readback. Established at FL280 for approximately 5 mins. Controller inquired as to our altitude: 'verify level at 270.' we responded: 'you cleared us to 280.' controller issued a clearance for immediate right 30 degree turn for us and also to an air carrier Z aircraft. After a while we were cleared direct to otman intersection on J30. I asked the controller if he wanted me to call on the landline. He said no. Flight continued to destination dca with no further incident controller and flight crew both acted professionally. Clearance readback and acknowledgement on both parts (controller and flight crew) should be strictly adhered to at all times.
Original NASA ASRS Text
Title: EASTBOUND ACR MLG CLEARED BY ZID TO FL280 WHEN CTLR INTENDED TO CLEAR THE FLT TO FL270. ERROR DETECTED BY ARTCC 5 MINUTES AFTER LEVEL AT CRUISE ALT.
Narrative: ZID CTLR CLRED US TO FL280. WE READ BACK CLRNC AND CLBED TO FL280. CTLR DID NOT DISPUTE CLRNC READBACK. ESTABLISHED AT FL280 FOR APPROX 5 MINS. CTLR INQUIRED AS TO OUR ALT: 'VERIFY LEVEL AT 270.' WE RESPONDED: 'YOU CLRED US TO 280.' CTLR ISSUED A CLRNC FOR IMMEDIATE RIGHT 30 DEG TURN FOR US AND ALSO TO AN ACR Z ACFT. AFTER A WHILE WE WERE CLRED DIRECT TO OTMAN INTXN ON J30. I ASKED THE CTLR IF HE WANTED ME TO CALL ON THE LANDLINE. HE SAID NO. FLT CONTINUED TO DEST DCA WITH NO FURTHER INCIDENT CTLR AND FLT CREW BOTH ACTED PROFESSIONALLY. CLRNC READBACK AND ACKNOWLEDGEMENT ON BOTH PARTS (CTLR AND FLT CREW) SHOULD BE STRICTLY ADHERED TO AT ALL TIMES.
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.