4790/38, (fig. 4-3) to certify daily and turnaround
inspections. This record is destroyed upon completion
of the next like inspection. Maintenance personnel
record all other inspections on the Maintenance Action
Form (MAF).
Table 4-1 lists the types of unscheduled
inspections, the purpose of each type, and when each is
done.
Maintenance personnel document a scheduled
aeronautical equipment inspection or aircraft inspec-
Table 4-1.—Unscheduled Aeronautical Equipment and Aircraft Inspections
TYPE OF INSPECTION
PURPOSE OR WHAT’S INVOLVED
WHEN DONE
Preoperational
To verify servicing (replenishment of oil, fuel, and
Before each operation of
(Pertains to equipment only) other consumables expended in operation) of
equipment.
equipment and to detect defects that will adversely
effect the operation of equipment.
Postoperational
To detect defects developed during each operation of
Immediately after each
(Pertains to equipment only)
equipment.
operation of equipment.
Turnaround
To ensure integrity of an aircraft for flight, to verify
Between flights.
servicing, and to detect defects from the previous
flight.
Valid for 24 hours provided no flights or maintenance
other than servicing occurred after the inspection.
Daily
To inspect for defects to a greater depth than the
Before the first flight of
turnaround inspection.
the day.
Valid for 72 hours provided no flights or maintenance
other than servicing occurred after the inspection.
Acceptance
Inspection to include:
When a reporting cus-
An inventory of all equipment listed in the aircraft
todian accepts a newly
inventory record
assigned aircraft or
Verification of cartridge-actuated devices (CADS)
equipment from any
and aircrew escape propulsion systems (AEPSs)
source as well as upon
Configuration verification
return of aircraft or
equipment from stand-
(Note: Visual external inspection and record
ard depot-level main-
examination are the only required verifications of
tenace (SDLM) or
CADS, AEPSs, and configuration. Disassembly
other major depot-level
beyond the daily inspection requirements of the
rework.
applicable PMS publication is not required.)
Hydraulic fluid sampling
Daily inspection as required by the applicable PMS
publication
Verification of:
(1) Monthly Flight Summary in the aircraft
logbook and
(2) Equipment Operating Records in the
Aeronautical Equipment Service Record
(AESR)
A complete functional check flight
More in-depth inspection when the equipment
condition or record examination indicates that such
action is warranted.
4-7
