131. FOREIGN OBJECT DAMAGE (FOD) INSPECTION
Inspect APU components during detailed applicable inspection tasks of Chapter 2.
132. HOT END INSPECTION ON CONDITION
Inspect hot end components (combustor housing, liner etc.) in accordance with the detailed inspection tasks of
133. OIL AND FUEL FILTER SERVICING
Servicing of the oil and fuel filter is limited to the replacement of the filter. Refer to applicable maintenance task
in Chapter 2 for detailed procedures.
134. OVERHAUL/RETIREMENT SCHEDULE
The maximum allowable operating time (MAOT) for the 100, 200 and 300 APU is 1000
hours or 3000 starts. The MCAT for the -201 and 300 APU is 6000 starts.
RETIREMENT SCHEDULE. The APU turbine wheel retirement life is 1000 hours or 3000
starts since last turbine wheel replacement for the 100, 200 and 300 APU. The 201 and
302 APU turbine wheel retirement life is 6000 starts.
The 300 and -302 engine are the only
engines with an hour meter and start
135. CORROSION INSPECTION
Technical inspector shall perform overall inspection of APU for corrosion. Corrosion is to be repaired by blend-
ing out pits with an abrasive pad. Refer to TM55152023723-5 for repair materials. If pits exceed 0.050
inch in depth APU requires depot repair. Refer to Glossary Section 2 for specific corrosion definitions.
Section X MAINTENANCE PROCEDURES
136. TESTING AND ADJUSTMENT
Testing and adjustment of the APU is accomplished with the APU installed in the aircraft, refer to
1-35/(1 36 blank)