BELL HELICOPTER 222, Maintenance Manual

Page: 192 / 198

BHT-222/222B-MM-1
5-00-00
Page 174
Rev. 7 9 SEP 2011 ECCN EAR99
Honeywell
101-650C/750C
Series Operation and
Maintenance Manual,
LTS 101-2.2 (2) If erosion or foreign object damage appears to
exceed acceptable limits, perform a teardown inspection.
Honeywell
101-650C/750C
Series Operation and
Maintenance Manual,
LTS 101-2.2 c. If compressor stall or surge occurred during
acceleration, refer to engine manufacturer’s manual for
troubleshooting procedures.
Honeywell
101-650C/750C
Series Operation and
Maintenance Manual,
LTS 101-2.2 d. If step a through step c do not reveal cause of surge,
inspect turbine assembly.
2. Power Train
a. If compressor stall occurs below 59% main rotor mast
torque, comply with the following:
(1) Remove magnetic chip detectors from
transmission and tail rotor gearbox, and inspect for metal
particles.
(2) If no indication of metal particles is found on chip
detectors, clean chip detectors and reinstall. Return helicopter
to limited flight status and repeat chip detector inspection in 5 to
10 hours. If positive indication of metal chips is found on chip
detectors on initial or 5 to 10 hour inspection, return unit for
overhaul, noting the reason.
b. If compressor stall occurs at 62% (59% for Model 222B)
mast torque or above, comply with the following:
(1) Remove magnetic chip detectors from
transmission and tail rotor gearbox, and inspect for metal
particles. If no indication of metal particles is found on chip
detectors, clean chip detectors and reinstall. If positive
indication of metal chips is found on chip detectors, return unit
for overhaul, noting the reason. Clean all affected oil lines and
replace oil coolers.
CONDITIONAL INSPECTIONS
5-58. COMPRESSOR STALL OR SURGE (CONT)
DATA REFERENCE INSPECTION TASK DESCRIPTION
INITIAL
MECH OTHER