What was found
STAB & MACH TRIM DISENGAGED IN FLT C/W QRH UNABLE TO RE-ENGAGE EITHER STAB TRIM CHANNEL( WOULD RE-ENGAGE BUT WOULD DIS-ENGAGE WHEN TRIM WAS MOVED) BTMS 8,7,6,6. HSTCU WAS SIEZED R&R HSTCU PER AMM 27-41-01-04.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
STAB & MACH TRIM DISENGAGED IN FLT C/W QRH UNABLE TO RE-ENGAGE EITHER STAB TRIM CHANNEL( WOULD RE-ENGAGE BUT WOULD DIS-ENGAGE WHEN TRIM WAS MOVED) BTMS 8,7,6,6. HSTCU WAS SIEZED R&R HSTCU PER AMM 27-41-01-04.