Correction Procedures - TB-1-1520-237-20-2180003

TB 1--1520--237--20--218

CAUTION

ANY MOVEMENT OF THE AIRCRAFT WHILE THE RETENTION STRAP IS REMOVED

MAY CAUSE THE PINS TO DISPLACE REQUIRING STRUT REMOVAL AND REPAIR.

b. Remove P/N 70250--13151--101 retention band from lower end. Verify all 4 retention pins, P/N

70250--13143--101, are installed. If any pins are missing, replace retention band and correct IAW para 9a.

Re--attach the retention band on lower end.

d. Remove the P/N 70250--13151--101 retention band from upper end.

e. Verify that all 8 retention pins, P/N 70250--13143--101, are installed in the upper end. If more than

one pin is missing, replace retention band and correct IAW para 9b. If only one pin is missing, a new pin must

be installed within 30 days of the inspection, contact the logistic POC in para 16b. The pin may be installed

in the strut with the strut still on the aircraft with no degradation in strut life or performance. If there is any

misalignment of the holes between the strut casing and the bearing preventing proper insertion of the pin,

the strut must be removed from aircraft to accomplish the correction.

f. Replace retention band. The inspection is complete. Report the results of the inspection IAW para-

graph 14b.

Correction Procedures

a. Lower Stage Discrepancy -- If any pins are missing, the strut must be replaced no later than 30 days

from the task/inspection suspense date in para 2. Contact the logistical point of contact listed at para 16b

for requisitioning instructions. Refer to para 9c for continued operation of the aircraft. Dispose of the suspect

strut assembly in accordance with paragraph 10d. The inspection is complete. Report the results of the in-

spection IAW paragraph 14b.

b. Upper Stage Discrepancy -- If more than one retention pin is missing from the upper stage cylinder

the strut must be replaced NLT 30 days from the task/inspection suspense date in para 2. Contact the logisti-

cal point of contact listed at para 16b for requisitioning instructions. Refer to para 9c for continued operation

of the aircraft. Dispose of the discrepant strut assembly in accordance with paragraph 10d. Report the re-

sults of the inspection IAW paragraph 14b.

c. UH--60 aircraft with discrepant tail landing gear struts may be operated under the following instruc-

tions. Change the aircraft status to a circle red //X// and annotate the DA Form2408--13--1 with the following:

"Aircraft is restricted from practice roll--on landings, practice touch down auto--rotations and from practice

landings with AFCS boost off." The circled red //X// may be cleared when a serviceable tail landing gear strut

is installed. The replacement strut must be installed NLT 10 April 2000.

10. Supply/Parts and Disposition.

a. Parts Required. The following parts may be required to replace defective or missing items.

NOMENCLATURE

PART NUMBER

NATIONAL STOCK NUMBER

Shock Strut Assy

70250--13101--044

1620--01--421--0890

Nut, Plain, Round

70250--13143--101

5310--01--098--4410

b. Requisitioning Instructions. Contact logistical point of contact in paragraph 16b for requisitioning

instructions.

Bulk and Consumable Materials. N/A.

d. Disposition. Contact the logistical POC in para 16b for disposition instruction. Hold exhibits pending

disposition instructions.

e. Disposition of Hazardous Material. IAW Environmental Protective Agency directives as implement-

ed by your servicing environmental coordinator (AR 200--1).