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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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B737-300 maximum gross takeoff runway 35R climbing to 10000 ft. Completing after takeoff checklist and vectored to 100 degrees plus TA given. Autoplt would not engage and noted altitude 10150 ft climbing. Descended to 9900 ft when controller questioned altitude. TCASII TA and RA and saw traffic visually 500 ft above. When clear of traffic cleared to 16000 ft.
| Attributes | |
| ACN | 363330 |
| Time | |
| Date | 199703 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : cos |
| State Reference | CO |
| Altitude | msl bound lower : 9900 msl bound upper : 10150 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : cos |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | climbout : intermediate altitude climbout : takeoff |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 240 flight time total : 15000 flight time type : 1300 |
| ASRS Report | 363330 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : overshoot conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were making a maximum gross weight takeoff on runway 35R at cos using improved climb, bleeds off, flaps 1 degree. The clearance was runway heading climb to 10000 ft MSL. After lift-off I proceeded on runway heading and the tower told us to turn to 010 degrees and contact departure control. The aircraft was being cleaned up as we contacted departure. He gave us a turn to 100 degrees to intercept the 349 degree radial off publication. I called for the after takeoff checklist and reset the bleeds as we leveled at 10000 ft turning to 100 degrees. Departure control advised us of VFR traffic at 2 O'clock. The copilot was looking for traffic as I attempted to engage the autoplt. It would not engage so I attempted it again without success. I looked back at the altimeter and noticed we were at 10150 ft in a climb. I immediately pushed the nose down to regain 10000 ft. At this time departure control asked if we were climbing because of a possible conflict with the VFR traffic. By this time we were at exactly 9900 ft so we told him we were at 10000 ft. We then picked up the traffic visually and on TCASII, which showed him at 500 ft above us closing. Soon afterward we got a TA followed by an RA from the TCASII. We stayed at 9900 ft until he passed because we had him visually. Departure control then gave us a climb to 16000 ft and contact ZDV. Looking back I should have either engaged the autoplt earlier to reduce the workload or waited till we had been cleared to climb to 16000 ft. There is just too much going on in the air traffic area especially when VFR aircraft are flying over the top.
Original NASA ASRS Text
Title: B737-300 MAX GROSS TKOF RWY 35R CLBING TO 10000 FT. COMPLETING AFTER TKOF CHKLIST AND VECTORED TO 100 DEGS PLUS TA GIVEN. AUTOPLT WOULD NOT ENGAGE AND NOTED ALT 10150 FT CLBING. DSNDED TO 9900 FT WHEN CTLR QUESTIONED ALT. TCASII TA AND RA AND SAW TFC VISUALLY 500 FT ABOVE. WHEN CLR OF TFC CLRED TO 16000 FT.
Narrative: WE WERE MAKING A MAX GROSS WT TKOF ON RWY 35R AT COS USING IMPROVED CLB, BLEEDS OFF, FLAPS 1 DEG. THE CLRNC WAS RWY HEADING CLB TO 10000 FT MSL. AFTER LIFT-OFF I PROCEEDED ON RWY HEADING AND THE TWR TOLD US TO TURN TO 010 DEGS AND CONTACT DEP CTL. THE ACFT WAS BEING CLEANED UP AS WE CONTACTED DEP. HE GAVE US A TURN TO 100 DEGS TO INTERCEPT THE 349 DEG RADIAL OFF PUB. I CALLED FOR THE AFTER TKOF CHKLIST AND RESET THE BLEEDS AS WE LEVELED AT 10000 FT TURNING TO 100 DEGS. DEP CTL ADVISED US OF VFR TFC AT 2 O'CLOCK. THE COPLT WAS LOOKING FOR TFC AS I ATTEMPTED TO ENGAGE THE AUTOPLT. IT WOULD NOT ENGAGE SO I ATTEMPTED IT AGAIN WITHOUT SUCCESS. I LOOKED BACK AT THE ALTIMETER AND NOTICED WE WERE AT 10150 FT IN A CLB. I IMMEDIATELY PUSHED THE NOSE DOWN TO REGAIN 10000 FT. AT THIS TIME DEP CTL ASKED IF WE WERE CLBING BECAUSE OF A POSSIBLE CONFLICT WITH THE VFR TFC. BY THIS TIME WE WERE AT EXACTLY 9900 FT SO WE TOLD HIM WE WERE AT 10000 FT. WE THEN PICKED UP THE TFC VISUALLY AND ON TCASII, WHICH SHOWED HIM AT 500 FT ABOVE US CLOSING. SOON AFTERWARD WE GOT A TA FOLLOWED BY AN RA FROM THE TCASII. WE STAYED AT 9900 FT UNTIL HE PASSED BECAUSE WE HAD HIM VISUALLY. DEP CTL THEN GAVE US A CLB TO 16000 FT AND CONTACT ZDV. LOOKING BACK I SHOULD HAVE EITHER ENGAGED THE AUTOPLT EARLIER TO REDUCE THE WORKLOAD OR WAITED TILL WE HAD BEEN CLRED TO CLB TO 16000 FT. THERE IS JUST TOO MUCH GOING ON IN THE ATA ESPECIALLY WHEN VFR ACFT ARE FLYING OVER THE TOP.
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.