TB 1-1520-237-20-162
(1) Total of 0.5 manhours using 1 person for the logbook inspection.
(2) Total of 16 manhours (2 persons for 8 hours) to prepare the aircraft/tail gearbox for the onetime ultrasonic
inspection and return it to an airworthy status.
(3) Total of 32 manhours (2 persons for 16 hours) to remove and replace the tail rotor gearbox.
c. Estimated Cost Impact of Stock Fund Items to the Field. N/A.
d. TBs/MWOs to be Applied Prior to or Concurrently with This Inspection. N/A.
e. Publications Which Require Change as a Result of This Inspection. N/A.
13.
References. TM 1-1520-237-23 Series Technical Manuals, Aviation Unit and Intermediate Maintenance for Army
UH-60A/EH-60A/UH-60L Helicopters, dated 31 August 1994.
14.
Recording and Reporting Requirements.
a. Reporting Compliance Suspense Date (Aircraft). Upon entering requirements of this TB on DA Form 2408-13-1
on all subject mission design series (MDS) aircraft, forward a priority message, datafax or E-Mail to Commander,
ATCOM, ATTN: AMSAT-R-X (SOF Compliance Officer), per AR 95-3. Datafax number is DSN 693-2064 or commercial
(314) 263-2064. E-Mail address is "amsatrxs@st-louis-emhr.army.mil". The report will cite this TB number, date of entry
in DA Form 2408-13-1, the aircraft MDS and serial numbers of aircraft in numerical order.
b. Task/Inspection Reporting Suspense Date for the Records Inspection (Aircraft). Upon completion of the records
inspection in accordance with paragraph 8, the unit will forward a priority message, fax or E-Mail to the logistical point of
contact, paragraph 16.b. The message will cite this TB number; date of inspection; aircraft serial number and hours; tail
gearbox part number, serial number and hours; tail gearbox output shaft part number, serial number, and hours; results
of the records inspection; a point of contact with commercial and DSN phone numbers; and a return fax or E-Mail
address. The message will be completed and forwarded no later than 10 days after the task/inspection suspense date.
c. Task/lnspection Reporting Suspense Date for the Ultrasonic Inspection (Aircraft). Upon completion of the
ultrasonic inspection in accordance with paragraph 9.a, the unit will forward a priority message to the logistical point of
contact. The message will cite this TB number; date of inspection; aircraft serial number and hours; tail gearbox part
number, serial number and hours; tail gearbox output shaft part number, serial number, and hours; results of the
ultrasonic inspection; a point of contact with commercial and DSN phone numbers; and a return fax or E-Mail address.
The message will be completed and forwarded no later than 5 days after completion of the inspection.
d. Reporting Compliance Suspense Date (Spares). N/A.
e. Task/Inspection Reporting Suspense Date (Spares). Upon completion of the records inspection, depot
commanders and others holding stock shall forward a priority message, fax or E-Mail report of results to logistical point of
contact below no later than 10 days after receipt of this TB. The report shall include quantity on hand, quantity which
passed inspection, quantity which failed inspection, a point of contact with commercial and DSN phone numbers and a
return fax or E-Mail address.
f. The following forms are applicable and are to be completed in accordance with DA PAM 738-751, 15 JUN 92: (1)
DA Form 2408-5-1, Equipment Modification Record (Tail Rotor Gearbox).
(2) DA Form 2408-13, Aircraft Status Information Record.
(3) DA Form 2408-13-1, Aircraft Inspection and Maintenance Record.
(4) DA Form 2408-13-2, Related Maintenance Actions.
(5) DA Form 2408-16, Aircraft Component Historical Record (Tail Rotor Gearbox). If tail gearbox output shaft
passes the one-time ultrasonic inspection per paragraph 9.a above, indicate the tail gearbox requires removal. Change
block 6k to new replacement due time.
(6) DA Form 2408-16, Aircraft Component Historical Record (Aircraft). Complete if the tail rotor gearbox is
removed.
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