 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier X climb to wrong altitude. TCASII RA. Had less than standard separation from aircraft Y. Evasive action climb system error.
| Attributes | |
| ACN | 274491 |
| Time | |
| Date | 199406 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : gve |
| State Reference | VA |
| Altitude | msl bound lower : 21000 msl bound upper : 22000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc tower : sfo |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 115 flight time total : 9500 flight time type : 850 |
| ASRS Report | 274491 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 110 flight time total : 7300 flight time type : 2000 |
| ASRS Report | 274492 |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : clearance non adherence : published procedure non adherence : required legal separation other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 24000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Pilot Deviation Operational Error |
Narrative:
Air carrier X near the top of climb we were cleared by female controller to FL240. At about FL180 we were reclred (same voice) to FL230. Copilot read back and set altitude alerter at 23000 ft. At about FL220 the TCASII issued a traffic call followed by climb RA. We then spotted an aircraft Y in good reference to the TCASII image showing him 500 ft above us. I informed center we had traffic at our altitude and said 'we are climbing to FL230.' she responded maintain 'FL120' and, sensing a conflict, I responded, 'negative, we're climbing to FL230, where do you want us?' by this time, traffic was clear. We leveled off and controller adds, '230 or 210 will work maintain FL230.' supplemental information from acn 274492: X near top of climb cleared to FL240, at FL180 modified to FL230. I read back FL230 and st altitude alerter to FL230. Supplemental information from acn 274836: X was assigned FL210. Readback was 'roger, FL210.' aircraft climbed to FL230. Equipment problems (the radar sector 'pvd' keys were not responsive, which led to the controller being busier, ad unable to verify readback).
Original NASA ASRS Text
Title: ACR X CLB TO WRONG ALT. TCASII RA. HAD LTSS FROM ACFT Y. EVASIVE ACTION CLB SYS ERROR.
Narrative: ACR X NEAR THE TOP OF CLB WE WERE CLRED BY FEMALE CTLR TO FL240. AT ABOUT FL180 WE WERE RECLRED (SAME VOICE) TO FL230. COPLT READ BACK AND SET ALT ALERTER AT 23000 FT. AT ABOUT FL220 THE TCASII ISSUED A TFC CALL FOLLOWED BY CLB RA. WE THEN SPOTTED AN ACFT Y IN GOOD REF TO THE TCASII IMAGE SHOWING HIM 500 FT ABOVE US. I INFORMED CTR WE HAD TFC AT OUR ALT AND SAID 'WE ARE CLBING TO FL230.' SHE RESPONDED MAINTAIN 'FL120' AND, SENSING A CONFLICT, I RESPONDED, 'NEGATIVE, WE'RE CLBING TO FL230, WHERE DO YOU WANT US?' BY THIS TIME, TFC WAS CLR. WE LEVELED OFF AND CTLR ADDS, '230 OR 210 WILL WORK MAINTAIN FL230.' SUPPLEMENTAL INFO FROM ACN 274492: X NEAR TOP OF CLB CLRED TO FL240, AT FL180 MODIFIED TO FL230. I READ BACK FL230 AND ST ALT ALERTER TO FL230. SUPPLEMENTAL INFO FROM ACN 274836: X WAS ASSIGNED FL210. READBACK WAS 'ROGER, FL210.' ACFT CLBED TO FL230. EQUIP PROBS (THE RADAR SECTOR 'PVD' KEYS WERE NOT RESPONSIVE, WHICH LED TO THE CTLR BEING BUSIER, AD UNABLE TO VERIFY READBACK).
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.