TB 1--1520--237--20--237
(4) Inspect the hub assembly for damage, wear, condition, and bonded liner integrity. Limit in-
spection of liner to ensuring the liners are held in place. If any condition is found that is beyond AVIM repair
authority, the condition shall be recorded and reported to the LOG POC in paragraph 16.b. for determination
of hub rework eligibility.
(5) If conditions are found that do not require depot repair, to include condition of the threaded
Correction Procedures. .
a. Serviceable hub assemblies that are not eligible for rework may continue in service under the follow-
ing conditions;
(1) The recurring 100 hour Eddy Current inspection implemented by TB 1-1520-237-20-235 shall
be continued until the hub is retired or removed from service.
(2) Record the inspection results on a DA Form 2408-5-1 rotor hub assembly.
(3) If not already implemented for this hub, unit level logistics system-aviation (ULLS-A) user's
shall use this message as authority to use one of their 800 inspection numbers for the 100 hour Eddy Current
inspection on the DA Form 2408-18.
NOTE
The UH-60 Project Management Office (PMO) will manage the rotable pool of reworked hub as-
semblies. All coordination will be through the UH-60 PMO Logistics POC in paragraph 16.b.(2).
b. For conditions that do not require depot level repair;
(1) Rework the damaged areas IAW TM procedures and limits.
(2) Remove all corrosion, and replace all unserviceable threaded inserts.
(3) Record all discrepancies and maintenance actions on DA Forms 2408-13-3, and 2408-5-1.
In addition to the part number, serial number, and other information required on the forms, include the final
inspection results. Maintain one copy of each form locally and attach one copy to the hub assembly in a sealed
plastic bag.
c. Prepare the hub for packing and shipping. a removed hub must be shipped within three working
days of receipt of the replacement hub.
CAUTION
Use care in handling and packing hub subassembly so that hub surfaces and/or bonded liners are not
damaged.
NOTE
Shipping instructions will be provided by the Sikorsky POC to be identified by the LOG POC in
d. For installation of a reworked hub assembly;
(1) Before installing the reworked hub assembly into the aircraft, verify documentation against
the hub assembly for part number and serial number.
(2) Inspect assembly for condition IAW normal procedures.
(3) Notify the Logistics POC in paragraph 16.b.(2) immediately of any discrepancies.
(4) When the inspection is complete, the hub assembly may be installed IAW normal TM practic-
es with configuration changes as specified in paragraph 12.e. of this TB.
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