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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Flight crew of a B737 climbed in response to another similar sounding call sign clearance. Departure controller observed the mistake and alerted the other aircraft and issued a heading change to the rptrs.
| Attributes | |
| ACN | 435598 |
| Time | |
| Date | 199904 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : ewr.airport |
| State Reference | NJ |
| Altitude | msl bound lower : 10000 msl bound upper : 10900 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : n90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : commercial pilot : instrument pilot : multi engine |
| Experience | flight time last 90 days : 10 flight time total : 3700 flight time type : 10 |
| ASRS Report | 435598 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 13500 flight time type : 900 |
| ASRS Report | 435464 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | controller : separated traffic controller : issued alert flight crew : returned to assigned airspace |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Our call sign was air carrier X. 2 other aircraft had similar call signs, air carrier Y and an air carrier Z. We were level at 10000 ft and heard a clearance to 16000 ft. We answered and started the climb. At 10700 ft we heard the controller state 'stand by air carrier Y, an air carrier X flight just took your clearance.' we recognized the error and crested at 10900 ft before returning to 10000 ft. No TA/RA alert sounded and controller did not mention a conflict. The radios were extremely congested and with the similar call signs, we inadvertently got someone else's clearance.
Original NASA ASRS Text
Title: FLC OF A B737 CLBED IN RESPONSE TO ANOTHER SIMILAR SOUNDING CALL SIGN CLRNC. DEP CTLR OBSERVED THE MISTAKE AND ALERTED THE OTHER ACFT AND ISSUED A HDG CHANGE TO THE RPTRS.
Narrative: OUR CALL SIGN WAS ACR X. 2 OTHER ACFT HAD SIMILAR CALL SIGNS, ACR Y AND AN ACR Z. WE WERE LEVEL AT 10000 FT AND HEARD A CLRNC TO 16000 FT. WE ANSWERED AND STARTED THE CLB. AT 10700 FT WE HEARD THE CTLR STATE 'STAND BY ACR Y, AN ACR X FLT JUST TOOK YOUR CLRNC.' WE RECOGNIZED THE ERROR AND CRESTED AT 10900 FT BEFORE RETURNING TO 10000 FT. NO TA/RA ALERT SOUNDED AND CTLR DID NOT MENTION A CONFLICT. THE RADIOS WERE EXTREMELY CONGESTED AND WITH THE SIMILAR CALL SIGNS, WE INADVERTENTLY GOT SOMEONE ELSE'S CLRNC.
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.