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Cpr small transport altitude deviation excursion from clearance altitude at the start of IAP NDB approach.
| Attributes | |
| ACN | 154889 |
| Time | |
| Date | 199008 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : rfe |
| State Reference | NC |
| Altitude | msl bound lower : 3000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : gsp |
| Operator | general aviation : corporate |
| Make Model Name | Small Transport, Low Wing, 2 Recip Eng |
| Flight Phase | descent : approach descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 616 flight time total : 1660 flight time type : 193 |
| ASRS Report | 154889 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While approaching the rfe NDB at rutherford county, nc, greer approach gave a clearance as follows: 'maintain 4000 until established on the final approach course, cleared for the NDB 36 approach to rutherford county.' I maintained 4000' until established on the final approach course outbnd and then descended to 3000' during the procedure turn as published. At this time I was confused about what the controller really intended. Did he intend for me to stay at 4000' until established on the final approach course inbound? It has been my understanding that the purpose of the procedure turn is to allow the pilot to descend on a course that will maintain obstruction clearance in preparation for the final approach. Had the controller specified inbound or outbnd the confusion would have been eliminated. In this case I do not believe that his intentions were necessarily inferred.
Original NASA ASRS Text
Title: CPR SMT ALT DEVIATION EXCURSION FROM CLRNC ALT AT THE START OF IAP NDB APCH.
Narrative: WHILE APCHING THE RFE NDB AT RUTHERFORD COUNTY, NC, GREER APCH GAVE A CLRNC AS FOLLOWS: 'MAINTAIN 4000 UNTIL ESTABLISHED ON THE FINAL APCH COURSE, CLRED FOR THE NDB 36 APCH TO RUTHERFORD COUNTY.' I MAINTAINED 4000' UNTIL ESTABLISHED ON THE FINAL APCH COURSE OUTBND AND THEN DSNDED TO 3000' DURING THE PROC TURN AS PUBLISHED. AT THIS TIME I WAS CONFUSED ABOUT WHAT THE CTLR REALLY INTENDED. DID HE INTEND FOR ME TO STAY AT 4000' UNTIL ESTABLISHED ON THE FINAL APCH COURSE INBND? IT HAS BEEN MY UNDERSTANDING THAT THE PURPOSE OF THE PROC TURN IS TO ALLOW THE PLT TO DSND ON A COURSE THAT WILL MAINTAIN OBSTRUCTION CLRNC IN PREPARATION FOR THE FINAL APCH. HAD THE CTLR SPECIFIED INBND OR OUTBND THE CONFUSION WOULD HAVE BEEN ELIMINATED. IN THIS CASE I DO NOT BELIEVE THAT HIS INTENTIONS WERE NECESSARILY INFERRED.
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.