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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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JS41 crew was given punitive holding because he refused repeated requests by ZKC to climb above 10000 ft. The aircraft pressurization system was MEL'ed inoperative. 10000 ft was his maximum permissible altitude.
| Attributes | |
| ACN | 532812 |
| Time | |
| Date | 200112 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sgf.airport |
| State Reference | MO |
| Altitude | msl single value : 9000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc.artcc tracon : sgf.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 41 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : holding |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | controller non radar : 7 controller radar : 7 flight time last 90 days : 230 flight time total : 3300 flight time type : 2050 |
| ASRS Report | 532812 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | controller : issued advisory controller : issued new clearance flight crew : returned to original clearance none taken : unable |
| Consequence | faa : assigned or threatened penalties other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : repair |
| Supplementary | |
| Problem Areas | FAA Company Aircraft ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Situations | |
| ATC Facility | procedure or policy : zkc.artcc |
Narrative:
During flight from jln to stl, our company filed our flight plan using the 'non pressurized route' for altitude restrs. After departing from jln, sgf approach changed our routing to our standard route (which I agreed to, until I realized the altitude restr). I informed sgf that we cannot accept the new clearance because we were limited to 10000 ft or below. (I told them we were unpressurized.) after a few mins, sgf again stated that ZKC wanted us to climb to 11000 ft and get on the arrival. At this point, I told sgf approach that I was unable to do that and suggested that we just continue our filed route. Sgf said he will work something out. Afterwards, he had us switch to ZKC, and cleared us for our filed route. Once I switched over to ZKC, ATC told us that what we were doing was wrong and gave us holding instructions at a fix for 1 hour 10 mins. He also told us to maintain radio silence. I was unable to explain that we were unpressurized. (It should have been on our ATC strip.) later on before the holding fix, he switched us to another frequency. (This controller just gave us direct to continue our filed route.) factors leading to this problem were: 1) ATC unwillingness to except that we were unpressurized. 2) comm between sgf and ZKC about our flight being unpressurized. 3) this flight plan was used by our company for a long time, so ATC shouldn't have had a problem with it. Also, we filed the flight plan and it was accepted and when departing jln, we were cleared as filed. 4) ZKC had a perception that we didn't want to fly the standard route. 5) last, it was a total failure in communication between my dispatcher, ATC (approach sgf and ZKC) and my flight.
Original NASA ASRS Text
Title: JS41 CREW WAS GIVEN PUNITIVE HOLDING BECAUSE HE REFUSED REPEATED REQUESTS BY ZKC TO CLB ABOVE 10000 FT. THE ACFT PRESSURIZATION SYS WAS MEL'ED INOP. 10000 FT WAS HIS MAX PERMISSIBLE ALT.
Narrative: DURING FLT FROM JLN TO STL, OUR COMPANY FILED OUR FLT PLAN USING THE 'NON PRESSURIZED RTE' FOR ALT RESTRS. AFTER DEPARTING FROM JLN, SGF APCH CHANGED OUR ROUTING TO OUR STANDARD RTE (WHICH I AGREED TO, UNTIL I REALIZED THE ALT RESTR). I INFORMED SGF THAT WE CANNOT ACCEPT THE NEW CLRNC BECAUSE WE WERE LIMITED TO 10000 FT OR BELOW. (I TOLD THEM WE WERE UNPRESSURIZED.) AFTER A FEW MINS, SGF AGAIN STATED THAT ZKC WANTED US TO CLB TO 11000 FT AND GET ON THE ARR. AT THIS POINT, I TOLD SGF APCH THAT I WAS UNABLE TO DO THAT AND SUGGESTED THAT WE JUST CONTINUE OUR FILED RTE. SGF SAID HE WILL WORK SOMETHING OUT. AFTERWARDS, HE HAD US SWITCH TO ZKC, AND CLRED US FOR OUR FILED RTE. ONCE I SWITCHED OVER TO ZKC, ATC TOLD US THAT WHAT WE WERE DOING WAS WRONG AND GAVE US HOLDING INSTRUCTIONS AT A FIX FOR 1 HR 10 MINS. HE ALSO TOLD US TO MAINTAIN RADIO SILENCE. I WAS UNABLE TO EXPLAIN THAT WE WERE UNPRESSURIZED. (IT SHOULD HAVE BEEN ON OUR ATC STRIP.) LATER ON BEFORE THE HOLDING FIX, HE SWITCHED US TO ANOTHER FREQ. (THIS CTLR JUST GAVE US DIRECT TO CONTINUE OUR FILED RTE.) FACTORS LEADING TO THIS PROB WERE: 1) ATC UNWILLINGNESS TO EXCEPT THAT WE WERE UNPRESSURIZED. 2) COMM BTWN SGF AND ZKC ABOUT OUR FLT BEING UNPRESSURIZED. 3) THIS FLT PLAN WAS USED BY OUR COMPANY FOR A LONG TIME, SO ATC SHOULDN'T HAVE HAD A PROB WITH IT. ALSO, WE FILED THE FLT PLAN AND IT WAS ACCEPTED AND WHEN DEPARTING JLN, WE WERE CLRED AS FILED. 4) ZKC HAD A PERCEPTION THAT WE DIDN'T WANT TO FLY THE STANDARD RTE. 5) LAST, IT WAS A TOTAL FAILURE IN COM BTWN MY DISPATCHER, ATC (APCH SGF AND ZKC) AND MY FLT.
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.