What was found
DURING OP 16 MAINT CHECK, FOUND EXTERNAL DOUBLER INSTALLED AT FS 495 TO 505, LONG 19 TO 20R. REPAIRED PER DC9 SRM 53-04, FIG 12B SHEET 6.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING OP 16 MAINT CHECK, FOUND EXTERNAL DOUBLER INSTALLED AT FS 495 TO 505, LONG 19 TO 20R. REPAIRED PER DC9 SRM 53-04, FIG 12B SHEET 6.