Narrative:

While conducting VOR DME approach to runway 22L jfk the controllers change the crossing altitudes at will. My aircraft uses FMC information and the altitudes are preprogrammed. This is not an approved procedure and causes distrs during a critical phase of flight. This has occurred on a frequent basis lately.

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Original NASA ASRS Text

Title: ADVTECH ACFT PLT COMPLAINS ABOUT ADVTECH ACFT EQUIP ATC HANDLING PROC INCOMPATIBILITY.

Narrative: WHILE CONDUCTING VOR DME APCH TO RWY 22L JFK THE CTLRS CHANGE THE XING ALTS AT WILL. MY ACFT USES FMC INFO AND THE ALTS ARE PREPROGRAMMED. THIS IS NOT AN APPROVED PROC AND CAUSES DISTRS DURING A CRITICAL PHASE OF FLT. THIS HAS OCCURRED ON A FREQUENT BASIS LATELY.

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.