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Altitude undershot, altitude crossing restr not met by a B737-300 flight crew when the PIC is off ATC frequency, on company radio, while crossing high over the VOR at cvg.
| Attributes | |
| ACN | 638795 |
| Time | |
| Date | 200412 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : cvg.vortac |
| State Reference | OH |
| Altitude | msl bound lower : 24000 msl bound upper : 25500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other vortac |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Experience | flight time last 90 days : 200 flight time total : 5300 flight time type : 1500 |
| ASRS Report | 638795 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Experience | flight time last 90 days : 100 flight time type : 600 |
| ASRS Report | 638794 |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance other anomaly other |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued advisory none taken : insufficient time |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Company |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cruising at FL270 and we were given a crossing restr of FL240 at cvg. The crossing restr was entered into the FMC and set in the altitude of the autoplt. The captain went off frequency to get our arrival gate. I had the progress page pulled up on the FMC instead of the descent page, which I normally use. I caught that I was above descent profile and needed to start my descent when the ZOB controller asked us our altitude. I had started my descent immediately, but I missed the crossing restr by 1500 ft over cvg and was at FL240 1 mi past cvg. There were no TCASII advisories or alerts. No deviations off course were required. The controller did not say anything else about the crossing restr. No other significant events noted. In the future, I will have the descent page pulled up on the FMC, as well as doing the mental descent calculations. I will also be more vigilant while the other pilot is off frequency. Supplemental information from acn 638794: there were no TA's or RA's and nothing was said to ATC. I should have been more aware of the PF's altitude and descent point. In addition, I was off frequency too long as cmh was not answering their radio. I should have come back onto frequency sooner.
Original NASA ASRS Text
Title: ALT UNDERSHOT, ALT XING RESTR NOT MET BY A B737-300 FLT CREW WHEN THE PIC IS OFF ATC FREQ, ON COMPANY RADIO, WHILE XING HIGH OVER THE VOR AT CVG.
Narrative: WE WERE CRUISING AT FL270 AND WE WERE GIVEN A XING RESTR OF FL240 AT CVG. THE XING RESTR WAS ENTERED INTO THE FMC AND SET IN THE ALT OF THE AUTOPLT. THE CAPT WENT OFF FREQ TO GET OUR ARR GATE. I HAD THE PROGRESS PAGE PULLED UP ON THE FMC INSTEAD OF THE DSCNT PAGE, WHICH I NORMALLY USE. I CAUGHT THAT I WAS ABOVE DSCNT PROFILE AND NEEDED TO START MY DSCNT WHEN THE ZOB CTLR ASKED US OUR ALT. I HAD STARTED MY DSCNT IMMEDIATELY, BUT I MISSED THE XING RESTR BY 1500 FT OVER CVG AND WAS AT FL240 1 MI PAST CVG. THERE WERE NO TCASII ADVISORIES OR ALERTS. NO DEVS OFF COURSE WERE REQUIRED. THE CTLR DID NOT SAY ANYTHING ELSE ABOUT THE XING RESTR. NO OTHER SIGNIFICANT EVENTS NOTED. IN THE FUTURE, I WILL HAVE THE DSCNT PAGE PULLED UP ON THE FMC, AS WELL AS DOING THE MENTAL DSCNT CALCULATIONS. I WILL ALSO BE MORE VIGILANT WHILE THE OTHER PLT IS OFF FREQ. SUPPLEMENTAL INFO FROM ACN 638794: THERE WERE NO TA'S OR RA'S AND NOTHING WAS SAID TO ATC. I SHOULD HAVE BEEN MORE AWARE OF THE PF'S ALT AND DSCNT POINT. IN ADDITION, I WAS OFF FREQ TOO LONG AS CMH WAS NOT ANSWERING THEIR RADIO. I SHOULD HAVE COME BACK ONTO FREQ SOONER.
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.