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Small aircraft X failed to inform controller of descent from arsa assigned VFR altitude had conflict with small aircraft Y. Small aircraft Y evasive action taken. See and avoid concept.
| Attributes | |
| ACN | 202472 |
| Time | |
| Date | 199202 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : psp |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : psp |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | descent other |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | general aviation : personal |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Fixed Gear |
| Flight Phase | cruise other |
| Route In Use | approach : visual |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 75 flight time total : 2000 flight time type : 1000 |
| ASRS Report | 202472 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : single pilot |
| Qualification | pilot : private |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
In radar contact, descending into kpsp, opposite direct traffic, small aircraft Y was given a traffic alert by palm springs TRACON. I did not see small aircraft Y until he went into a left bank away from our track. The controller said that my altitude was incorrect for the direction of flight. I responded that the hemispherical rule applied to cruise only, and I was descending as he could plainly see via my mode C transmissions.
Original NASA ASRS Text
Title: SMA X FAILED TO INFORM CTLR OF DSCNT FROM ARSA ASSIGNED VFR ALT HAD CONFLICT WITH SMA Y. SMA Y EVASIVE ACTION TAKEN. SEE AND AVOID CONCEPT.
Narrative: IN RADAR CONTACT, DSNDING INTO KPSP, OPPOSITE DIRECT TFC, SMA Y WAS GIVEN A TFC ALERT BY PALM SPRINGS TRACON. I DID NOT SEE SMA Y UNTIL HE WENT INTO A L BANK AWAY FROM OUR TRACK. THE CTLR SAID THAT MY ALT WAS INCORRECT FOR THE DIRECTION OF FLT. I RESPONDED THAT THE HEMISPHERICAL RULE APPLIED TO CRUISE ONLY, AND I WAS DSNDING AS HE COULD PLAINLY SEE VIA MY MODE C TRANSMISSIONS.
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.