Correction Procedures. - TB-1-1520-240-20-1280003

TB 1-1520-240-20-128

inspection, reassemble in accordance with TM 55--1520--240--23, Task 11--217 or TM 1--1520--252--23, Task

11--235. Clear the red horizontal dash // -- // status symbol for the aircraft.

(2) If the entire inside surface of the shaft is not completely painted or there is evidence of corro-

sion, the shaft will have to be treated with a corrosion preventive compound (CPC) and replaced in accor-

dance with paragraph 9.

Correction Procedures.

a. If the entire inside surface of the shaft is not painted or there is evidence of corrosion, the shaft inter-

nal diameter shall be treated with a CPC in accordance with MIL--C--16173 Grade 4 or MIL--C--81309 Type

II. These CPCs are thin transparent films which can be applied by pressurized spray or pump bottle. Follow

the application of these sprayed on CPCs with the application of MIL--C--16173 Grade 2 which is more dura-

ble. This CPC has a grease like consistency and needs to be applied by using a small brush with a longhandle.

b. After the corection procedures in paragraph 9a are completed, make the following entry on the DA

Form 2408--13--1. Enter a red Diagonal\\ / \\ status symbol with the following entry:"Replace forward yoke

shaft in accordance with CH--47--00--ASAM--08 (TB 1--1520--240--20--128) no later than 31 DEC 2001." The

red horizontal dash // -- // entry "Inspect forward yoke shaft in accordance with CH--47--00--ASAM--08 (TB

1--1520--240--20--128)" may then be cleared.

Requisition a new forward yoke shaft per paragraph 10 for each shaft in which the CPCs were ap-

plied.

10. Supply/Parts and Disposition.

Parts Required. Items cited in paragraph 7 may be required to replace defective items.

b. Requisitioning Instructions. Requisition replacement parts using normal supply procedures. All req-

uisitions shall use project code (CC 57-59) "X05", (X-RAY-ZERO-FIVE).

NOTE

Project code "X05", is required to track and establish a data base of

stock fund expenditures incurred by the field as a result of SOF actions.

Bulk and Consumable Materials.

(1) Corrosion--preventive compound, water displacing, ultra--thin film, type II, class 2, 16 oz.

aerosol spray, MIL--C--81309, NSN 8030--00--938--1947 or corrosion--preventive compound, solvent cut-

back, cold application, grade 4, gallon, MIL--C--16173, NSN 8030--00--062--5866.

(2) Corrosion--preventive

compound,

cold

application,

grade

MIL--C--16173,

8030--00--244--1297.

d. Disposition. Demilitarize/mutilate in accordance with TM 1--1500--328--23 any part/component

which does not meet inspection criteria.

Disposition of Hazardous Material. N/A.

11. Special Tools and Fixtures Required. As required.

12. Application .

Category of Maintenance. AVUM. Aircraft downtime will be charged to AVUM.

Estimated Time Required-

(1) For on--aircraft inspection/CPC application:

(a) Total of 1 man--hours using 1 person.

(b) Total of 1 hour downtime for one end item.

(2) For off--aircraft inspection/CPC application:

(a) Total of 36 man--hours using 3 persons.