TB1--1520--238--20--124
c. If a bellcrank support bracket without a cutout is installed, perform a clearance check as follows
(1) Using AGPU or APU hydraulic power, apply full right pedal input until the tail rotor bellcrank
counterweight arm has reached its lowest position.
(2) If any evidence of contact between the bellcrank counterweight arm and the bellcrank support
bracket is observed, or there is any evidence of previous contact, correct IAW paragraph 9a.
(3) If no contact, or evidence of previous contact, between the bellcrank counterweight arm and
bellcrank support bracket is observed. Enter a red diagonal "/" status symbol with the following statement:
"Repair tail rotor bellcrank bracket assembly IAW TB 1--1520--238--20--124 at next phase.
d. Inspect the bellcrank, P/N 7--311523014--5, as follows --
(1) Inspect outboard surface of the bellcrank for missing paint and scratches, dents or damage.
If any damage is found, blend out and apply touch up paint. Continue to inspect IAW paragraph 8d(2).
(2) Inspect bottom area of the bellcrank inbd counterweight arm in section closest to bellcrank
mounting bracket upper surface for nicks, paint removal, or damage from bracket contact.
(3) If damage is found, enter a red diagonal "--" status symbol with the following statement: "Re-
pair tail rotor bellcrank IAW TB 1--1520--238--20--124 at next phase."
(4) Correct IAW paragraph 9c.
e. If a bellcrank support bracket with a cutout is installed, and if no damage is observed on both the
bellcrank and bellcrank support bracket-- clear the red horizontal dash "--/" entry required IAW paragraph 1a.
9.
NOTE
During the temporary and permanent repair, precautions to prevent FOD must be ad-
hered to. A vacuum device must be used during the repair to collect metallic dust and
shavings.
a. Perform the following AVUM level correction procedures for the bellcrank support bracket--
NOTE
This repair is considered a temporary repair. Units must schedule permanent repair of
the bellcrank support bracket and bellcrank IAW paragraph 9b at the next 250 hour
phase inspection. Perform a recurring visual inspection at each10 hr/14 day inspection
until the permanent repair is completed.
(1) Install rig pins at tail rotor control bellcranks P/N 7--311517052 (FS 164.33) and P/N
7--311524010 (FS 347.96).
(2) Disconnect push rod assemblies P/N 7--211524001--7 and P/N 7--211524001--9 from the tail
rotor control bellcrank (FS 216.25).
(3) Repair the bellcrank support bracket using a half--round hand file. Remove approximately
0.060 inch to assure clearance.
(4) Touch--up reworked area using MIL--C--5541 class a (corrosion resistant coating) and MIL--
PRF--85582 Type 1/Class 2 (epoxy primer).
(5) Reassemble control rod assemblies, remove rig pins and inspect IAW TM 1--1520--238--23
or the IETM.
(6) Enter a red diagonal "/" status symbol with the following statement: "Repair tail rotor bellcrank
bracket assembly IAW TB 1--1520--238--20--124 at next phase." Schedule an AVIM level repair of the bracket
at the next scheduled 250 hour phase inspection IAW paragraph 9b.
(7) Clear the red dash "--" entry required IAW paragraph 1a and enter a new red horizontal dash
"--" status symbol with the following statement: "Inspect tail rotor bellcrank bracket assembly at each PMS--1
3
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