Quantcast Correction Procedures. - TB-1-1520-237-20-2250005

 

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Inspection Procedures-continued - TB-1-1520-237-20-2250004
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TB-1-1520-237-20-225 RCS CSGLD-1-1860(R1) All H-60 Aircraft Main Landing Gear Drag Beam Assembly and Decreased Torque on The Jackpad Nut Manual
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Application - TB-1-1520-237-20-2250006
TB 1--1520--237--20--225
b.
The recurring inspections of each main landing gear drag beam will occur as follows:
(1) Prior to each flight, to include pre--flight, through flights, and post flight, wipe clean the top and
bottom of left and right main landing gear drag beams within a 2 inch radius of drag beam jackpad bolt/tie
down.
(2) Check for cracks radiating from the jackpad bolt/tie down holes.
NOTE
No cracks allowed.
(3) f a crack is found or suspected:
(a) Enter a Red Horizontal Dash //--// status symbol on the DA Form 2408--13--1 with the fol-
lowing statement: "Fluorescent penetrant inspection required IAW TB 1--1520--237--20--225."
(b) Proceed to paragraph 8c.
c.
f a crack is found or suspected:
(1) Perform a fluorescent penetrant inspection to confirm the existence of the crack.
(2) If the crack is confirmed, proceed to paragraph 9a.
(3) If a crack is not found after application of the fluorescent penetrant inspection, continue with
the inspection procedures IAW paragraph 8a or 8b as applicable.
d.  At the next scheduled and each subsequent 90 day corrosion prevention inspection, apply corrosion
prevention compound (CPC) over the sealant.
Correction Procedures.
a.
If cracks are found:
(1) Change status of aircraft to a Red //X//.
(2) Immediately remove aircraft weight off of that main landing gear.
(3) Replace discrepant drag beam IAW with normal TM procedures as modified IAW this mes-
sage.
b.  If corrosion is found, clean/repair IAW TM 1--1520--237--23, para 3--3--1, or TM 1--1520--250--23,
para 3.1.3.
10. Supply/Parts and Disposition.
a.  Parts required. In addition to the items listed in paragraph 7, the following may be required to replace
defective items.
NOMENCLATURE
PART NUMBER
NSN
Nut, Self--Locking
MS 21245L12
5310--00--419--0876
Packing with Retainer
NAS1523C12Y
5330--01--227--0458
b.  Requisitioning instructions. Requisition replacement parts using normal supply procedures. All req-
uisitions shall use project code (CC 57--59) "X0C" (Xray--Zero--Charlie)
NOTE
Project code "X0C" is required to track and establish a data base of stock fund expenditures in-
curred by the field as a result of SOF actions.
5

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