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ATC handling after being cleared for approach questioned by reporter.
| Attributes | |
| ACN | 528198 |
| Time | |
| Date | 200110 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : sbn.airport |
| State Reference | IN |
| Altitude | agl single value : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : sbn.tracon tracon : hts.tracon |
| Operator | common carrier : air taxi |
| Make Model Name | Beechjet 400 |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | ils localizer & glide slope : 27 other |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : sbn.tracon tower : sbn.tower |
| Make Model Name | PA-31 Navajo Chieftan/Mojave/Navajo T1020 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | approach : instrument precision |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 60 flight time total : 4000 flight time type : 60 |
| ASRS Report | 528198 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : first officer |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance non adherence : published procedure |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
Narrative:
We were told by sbn approach that a navajo would be in trail at 3000 ft on the ILS for runway 27 at sbn. As we were about to blow through the localizer, I called and asked if we were cleared to intercept. Response was 'oh yeah, I was about to call you on that.' the next call was 'maintain 4000 ft until established, cleared for ILS runway 27 approach.' at that point, we selected approach mode on the flight director, intercepted the localizer and GS, and started down. Just outside the marker, we were called to stop our descent. This was at 2700 ft and told to go back to 4000 ft. We questioned the call, 'do you want us back to 4000 ft or stay at 2700 ft?' they responded, 'no, continue with the approach.' upon landing, we were told by ground to contact the tower chief. He claims we were told the plane (navajo) was in front at 3000 ft. Several questions: 1) if we were in danger, why not back to 4000 ft? 2) why did they wait until 2700 ft, over 1000 ft before the call? We were IMC the entire time of this event. I believe the controller's experience level in this matter was the cause of this event -- starting with the localizer 'non-call.' from the sounds of things, he was short on experience.
Original NASA ASRS Text
Title: ATC HANDLING AFTER BEING CLRED FOR APCH QUESTIONED BY RPTR.
Narrative: WE WERE TOLD BY SBN APCH THAT A NAVAJO WOULD BE IN TRAIL AT 3000 FT ON THE ILS FOR RWY 27 AT SBN. AS WE WERE ABOUT TO BLOW THROUGH THE LOC, I CALLED AND ASKED IF WE WERE CLRED TO INTERCEPT. RESPONSE WAS 'OH YEAH, I WAS ABOUT TO CALL YOU ON THAT.' THE NEXT CALL WAS 'MAINTAIN 4000 FT UNTIL ESTABLISHED, CLRED FOR ILS RWY 27 APCH.' AT THAT POINT, WE SELECTED APCH MODE ON THE FLT DIRECTOR, INTERCEPTED THE LOC AND GS, AND STARTED DOWN. JUST OUTSIDE THE MARKER, WE WERE CALLED TO STOP OUR DSCNT. THIS WAS AT 2700 FT AND TOLD TO GO BACK TO 4000 FT. WE QUESTIONED THE CALL, 'DO YOU WANT US BACK TO 4000 FT OR STAY AT 2700 FT?' THEY RESPONDED, 'NO, CONTINUE WITH THE APCH.' UPON LNDG, WE WERE TOLD BY GND TO CONTACT THE TWR CHIEF. HE CLAIMS WE WERE TOLD THE PLANE (NAVAJO) WAS IN FRONT AT 3000 FT. SEVERAL QUESTIONS: 1) IF WE WERE IN DANGER, WHY NOT BACK TO 4000 FT? 2) WHY DID THEY WAIT UNTIL 2700 FT, OVER 1000 FT BEFORE THE CALL? WE WERE IMC THE ENTIRE TIME OF THIS EVENT. I BELIEVE THE CTLR'S EXPERIENCE LEVEL IN THIS MATTER WAS THE CAUSE OF THIS EVENT -- STARTING WITH THE LOC 'NON-CALL.' FROM THE SOUNDS OF THINGS, HE WAS SHORT ON EXPERIENCE.
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.