SDR CA130124017

Service difficulty report · Fmc · Bombdr BD7001A10

Difficulty date: July 17, 2012
Submitted: September 14, 2015
Operation: General aviation
Make and model: Bombdr BD7001A10
System (JASC): 3460 · Flight Management Computing Hardware System
Part: Fmc
Condition: Malfunctioned
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

(CAN) DURING CERTIFICATION TESTING OF BATCH 3 FLIGHT MANAGEMENT SYSTEM, FMS, IT WAS UNCOVERED THAT THE FMS MAY COMMAND TURNS THAT ARE NOT IAW THE PUBLISHED PROCEDURE. THE EVENTS HAVE BEEN FOUND TO BE RELATED TO INCORRECT SEQUENCING OF SPECIFIC LEG COMBINATIONS ASSOCIATED WITH A DATABASE ERROR. THE INCORRECT SEQUENCING HAS THE POTENTIAL TO AFFECT IN-SERVICE ACFT.