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Citation type aircraft descending into dfw area loses part of his navigation capabilities and asks for altitude relief (12000 ft) on the altitude crossing restr at gregs intersection. Controller clears him to 7000 ft.
| Attributes | |
| ACN | 378880 |
| Time | |
| Date | 199709 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | general aviation : corporate |
| Make Model Name | Cessna Citation Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 7000 flight time type : 25 |
| ASRS Report | 378880 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | aircraft equipment problem : less severe altitude deviation : crossing restriction not met altitude deviation : undershoot non adherence : clearance |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
I was on an IFR flight plan from mry, ca, to ads, tx. I was issued a clearance to cross the gregs intersection at 12000 ft. During the descent I lost part of my navigation capabilities and subsequently missed the crossing restr. The controller advised that there was no other aircraft conflict. Prior to reaching the fix, I asked the controller for leniency from the crossing restr and shortly thereafter he issued a clearance to descend and maintain 7000 ft. A normal approach and landing was made at ads.
Original NASA ASRS Text
Title: CITATION TYPE ACFT DSNDING INTO DFW AREA LOSES PART OF HIS NAV CAPABILITIES AND ASKS FOR ALT RELIEF (12000 FT) ON THE ALT XING RESTR AT GREGS INTXN. CTLR CLRS HIM TO 7000 FT.
Narrative: I WAS ON AN IFR FLT PLAN FROM MRY, CA, TO ADS, TX. I WAS ISSUED A CLRNC TO CROSS THE GREGS INTXN AT 12000 FT. DURING THE DSCNT I LOST PART OF MY NAV CAPABILITIES AND SUBSEQUENTLY MISSED THE XING RESTR. THE CTLR ADVISED THAT THERE WAS NO OTHER ACFT CONFLICT. PRIOR TO REACHING THE FIX, I ASKED THE CTLR FOR LENIENCY FROM THE XING RESTR AND SHORTLY THEREAFTER HE ISSUED A CLRNC TO DSND AND MAINTAIN 7000 FT. A NORMAL APCH AND LNDG WAS MADE AT ADS.
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.