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Pilot descended from assigned altitude without clearance. Pilot deviation. Less than standard separation.
| Attributes | |
| ACN | 119464 |
| Time | |
| Date | 198908 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : asw |
| State Reference | IN |
| Altitude | msl bound lower : 4000 msl bound upper : 5000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | cruise other descent other |
| Route In Use | enroute airway : sbn enroute other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Small Aircraft, High Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 119464 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : required legal separation non adherence : clearance |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Small aircraft a, an arrival to gsh, stopped at 5000' (acknowledged) to maintain sep from small aircraft Y, a pointout from chicago center, gsh sector (still in fort wayne approach airspace) at 4000' (landing in 73). Bases in the area approximately 4900'. Small aircraft X was issued traffic and acknowledged. Small aircraft X called to give pilot report of bases 4900 to 4800'. Mode C confirmed below assigned altitude. Small aircraft X was instructed to climb back to 5000' and did, leaving 4600'. No action taken by small aircraft Y. Pilot was within 15 mi of destination; may have forgotten altitude restriction in eagerness to get to destination.
Original NASA ASRS Text
Title: PLT DESCENDED FROM ASSIGNED ALT WITHOUT CLRNC. PLT DEVIATION. LESS THAN STANDARD SEPARATION.
Narrative: SMA A, AN ARR TO GSH, STOPPED AT 5000' (ACKNOWLEDGED) TO MAINTAIN SEP FROM SMA Y, A POINTOUT FROM CHICAGO CENTER, GSH SECTOR (STILL IN FORT WAYNE APCH AIRSPACE) AT 4000' (LNDG IN 73). BASES IN THE AREA APPROX 4900'. SMA X WAS ISSUED TFC AND ACKNOWLEDGED. SMA X CALLED TO GIVE PLT RPT OF BASES 4900 TO 4800'. MODE C CONFIRMED BELOW ASSIGNED ALT. SMA X WAS INSTRUCTED TO CLB BACK TO 5000' AND DID, LEAVING 4600'. NO ACTION TAKEN BY SMA Y. PLT WAS WITHIN 15 MI OF DEST; MAY HAVE FORGOTTEN ALT RESTRICTION IN EAGERNESS TO GET TO DEST.
Data retrieved from NASA's ASRS site as of August 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.