Narrative:

Fans problems: 1) there is no line select feature to report leaving an assigned altitude. 2) the standard procedures differ from the conventional pilot/ATC procedures. Example, ATC does not acknowledge receipt of reports, such as: position, leaving altitude, reaching altitude, etc.

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Original NASA ASRS Text

Title: A B747-400 CAPT WRITES A RPT STATING THE DEFICIENCY OF FANS AND THE PROBS IT CAUSES.

Narrative: FANS PROBS: 1) THERE IS NO LINE SELECT FEATURE TO RPT LEAVING AN ASSIGNED ALT. 2) THE STANDARD PROCS DIFFER FROM THE CONVENTIONAL PLT/ATC PROCS. EXAMPLE, ATC DOES NOT ACKNOWLEDGE RECEIPT OF RPTS, SUCH AS: POS, LEAVING ALT, REACHING ALT, ETC.

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.