 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Altitude bust creates potential conflict. Controller attempts salvage by instructing aircraft to descend back to original altitude. PIC takes aircraft and performs evasive action climb and uses TCASII based decision to climb to avoid traffic.
| Attributes | |
| ACN | 260997 |
| Time | |
| Date | 199401 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cle |
| State Reference | OH |
| Altitude | msl bound lower : 6000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | Marginal |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tracon : cle |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 11000 |
| ASRS Report | 260997 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : flight engineer pilot : atp |
| Experience | flight time last 90 days : 240 flight time total : 10600 |
| ASRS Report | 260995 |
| Events | |
| Anomaly | altitude deviation : overshoot conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | controller : issued new clearance flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 18000 vertical : 1000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On climb out of cle airport initial level off was at 5000 ft. Departure then cleared the flight to 6000 ft. I mistakenly dialed in 8000 ft MSL. We had a conflict with 7000 ft MSL traffic. At the time departure notified us of the conflict we were already climbing through 7500 ft MSL. We continued climbing to 8000 ft. Separation estimated to be in excess of 1000 ft vertical and 2 1/2 - 3 mi horizontal. We did get visual contact at the time of departure's initial conflict call. Although departure instructed us to descend at that point, the safer course of action was to continue climb to 8000 ft. Supplemental information from acn 260995: after leveling off at 5000 ft MSL, we were given clearance to climb to 6000 ft. The captain placed 8000 ft in the altitude alerter and I am unsure if there were heading vectors during our climb. At about 7600 ft MSL the controller advised us to descend to 6000 ft. I began a descent and the captain, who had been observing traffic on TCASII, took the aircraft and climbed visually clear of the 7000 ft traffic. We climbed through about 8500 ft MSL and were given a northerly heading and 11000 ft.
Original NASA ASRS Text
Title: ALT BUST CREATES POTENTIAL CONFLICT. CTLR ATTEMPTS SALVAGE BY INSTRUCTING ACFT TO DSND BACK TO ORIGINAL ALT. PIC TAKES ACFT AND PERFORMS EVASIVE ACTION CLB AND USES TCASII BASED DECISION TO CLB TO AVOID TFC.
Narrative: ON CLBOUT OF CLE ARPT INITIAL LEVEL OFF WAS AT 5000 FT. DEP THEN CLRED THE FLT TO 6000 FT. I MISTAKENLY DIALED IN 8000 FT MSL. WE HAD A CONFLICT WITH 7000 FT MSL TFC. AT THE TIME DEP NOTIFIED US OF THE CONFLICT WE WERE ALREADY CLBING THROUGH 7500 FT MSL. WE CONTINUED CLBING TO 8000 FT. SEPARATION ESTIMATED TO BE IN EXCESS OF 1000 FT VERT AND 2 1/2 - 3 MI HORIZ. WE DID GET VISUAL CONTACT AT THE TIME OF DEP'S INITIAL CONFLICT CALL. ALTHOUGH DEP INSTRUCTED US TO DSND AT THAT POINT, THE SAFER COURSE OF ACTION WAS TO CONTINUE CLB TO 8000 FT. SUPPLEMENTAL INFORMATION FROM ACN 260995: AFTER LEVELING OFF AT 5000 FT MSL, WE WERE GIVEN CLRNC TO CLB TO 6000 FT. THE CAPT PLACED 8000 FT IN THE ALT ALERTER AND I AM UNSURE IF THERE WERE HDG VECTORS DURING OUR CLB. AT ABOUT 7600 FT MSL THE CTLR ADVISED US TO DSND TO 6000 FT. I BEGAN A DSCNT AND THE CAPT, WHO HAD BEEN OBSERVING TFC ON TCASII, TOOK THE ACFT AND CLBED VISUALLY CLR OF THE 7000 FT TFC. WE CLBED THROUGH ABOUT 8500 FT MSL AND WERE GIVEN A NORTHERLY HDG AND 11000 FT.
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.