TB 1-1520-237-20-173
(1) Inspection of assembly components in stock listed in paragraph 6 (All Condition Codes).
(a) Inspect tail rotor gear box for serial number of tail rotor inboard retention plate.
(b) If the tail rotor inboard retention plate does not, repeat, not have a serial number of C1324-001 thru
C133324-150 or FM00001 thru FM00142, the inspection is complete. Return the component to its original material
condition classification and annotate the original material condition tag that the component was inspected OK IAW this
(c) If the gearbox retention plate has a serial number of C1324-001 thru C1324-150 or FM00001 thru
FM00142, place the assembly component (Item in paragraph 6) in condition code "D" and prepare DD Form 1576
Test/Modification tag Material. Annotate the authority block with "T/R retention plate requires fatigue life validation (UH-
60-96-02) (TB 1-1520- 237-20-173)." Do not remove original material condition tag. Report IAW paragraph 14d.
(2) Inspection of parts in stock listed in paragraph 7 (All Conditions Codes)
(a) Locate the serial number etched on the side of the tail rotor inboard retention plate.
(b) If the tail rotor inboard retention plate does not, repeat, not have a serial number of C1324-001 thru
C1324-150 or FM00001 thru FM00142, the inspection is complete. Return the part to its original material condition
classification and annotate the original material condition tag that the component was inspected OK IAW this (TB).
(c) If the retention plate has a serial number of FM00001 thru FM00142, place the material in condition code
"D" and prepare DD Form 1576 test/modification tag materiel. Annotate the authority block with "T/R Retention Plate
requires fatigue life validation (UH-60-96-02 (TB 1-1520-237-20-173)." Do not remove original condition Tag. Report
IAW 14d.
(d) If the retention plate has serial number of C1324-001 thru C1324-150, check operating time from the item
historical records.
(1) If the item is new, originally in condition code "A" ( or "D" if the only requirement was validation of
fatigue testing) and was tagged with a DD Form 1574 serviceable tag material, change the condition code to "B".
Annotate the remarks block to read "Retirement life reduced to 148 hours IAW UH-60-96-02 (TB 1-1520-237-20-173)."
(2) If the item shows time since new or was in a condition code other than "A", place the materiel in
condition code "D" and prepare DD Form 1576 test/modification tag materiel. Annotate the authority
block with "T/R retention plate requires fatigue life validation (UH-60-96-02) (TB 1-1520-237-20-173)."
2. Task/Inspection Suspense Date. Prior to next flight.
3. Reporting Compliance Suspense Date. No
later than 15
December 1995 per paragraph 14a of
this (TB).
2