TB 1-1520-238-20-99
7.
Parts To Be Inspected . N/A.
Inspection Procedures.
a.
Conduct a records check of the aircraft historical record, DA Form 2408-16, to determine:
(1) Main transmission serial number.
(2) Main transmission part number.
(3) Main transmission Time Since New (TSN) flight hours.
NOTE
Units will verify the serial number of the transmission in the
DA Form 2408-16 with the transmission in the aircraft.
b. If the transmission serial number matches any of the following, proceed to paragraph 9.b: serial
numbers A13-0184, A13-0269, A13-0031, A13-0069, A13-0139, D13-0146, D13-0433, D13-0467,
A13-0264, A13-0311, or A13-0522.
c.
If the serial numbers do not match any of those listed in paragraph 8.b., continue with the inspection.
d.
Determine the main transmission TSN from the aircraft log book.
(1) If TSN hours do not exceed 750, the inspection is complete. Annotate the new 750 flight hour
replacement for the clutches on the main transmission DA Form 2408-16 with two new line entries----one for
the primary and one for the secondary ACC module (sprag) clutch per the instructions below.
(a) Non-ULLS-A units add the ACC module clutch, primary and ACC module clutch, secon-
dary to the main transmission, DA Form 2408-16, using the following information:
1.
Block 6A, Nomenclature and WUC.
a.
Top Line. Enter "ACC Module Clutch, Primary" and "ACC Module Clutch, Secon-
dary".
b. Bottom Line. Enter "06A11A" for the ACC Module Clutch, Primary, and "06A11B"
for the ACC Module Clutch, Secondary.
2.
Block 6B, P/N and NSN.
a.
Top Line. Enter "7-113100109".
b.
Bottom Line. Enter "1615-01-172-5060".
3.
Block 6C, Component Ser No. Location. Enter "Unknown".
4.
Block 6D, No Prev O/H. Enter "RC".
5.
Block 6E, Nomen Inst Hrs. Leave blank at this time. It is unknown.
6.
Block 6F, Nomen RMVL Hrs. Not required at this time.
7.
Block 6G, Time Since O/H. Enter "RC".
8. Block 6H, Comp Inst Hrs. Compute the hours for the clutch in accordance with para-
graph 8.d. and enter here.
9.
Block 6I, Comp RMVL Hrs. Not required at this time.
10. Block 6J, OH or Replace Live. Enter "750".
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