Attachment_0015_MEO_B2481_W58RGZ-19-R-0050.pdf

MAINTENANCE ENGINEERING ORDER

(AMCOM Reg. 750-2)

MEO NO.

DATE PAGE 1 of

TITLE Tolerances Unless otherwise noted, dimensions are in inches and tolerances are:

Fractional ………………… ± 1/32 Decimal ………………... ± 0.010 Angular ………………… ± ½°

APPLICABILITY CSI Critical Characteristic Affected?

Impact Statement Attached?

REFERENCES FOR RDECOM USE ONLY

DOCUMENT(S) AFFECTED

PURPOSE OR PROBLEM

PROJECT ENGINEER ENGINEERING REVIEW ENGINEERING RELEASE

MED FORM 5-DEC-09 1401-R-E

B 2481 Aug 15, 2016 4

TAIL ROTOR BLADE ASSEMBLY (70101-11200-044),

(70101-31000-043) - Add in process corrosion protection.

Technical

INTERIM USE OF THIS MEO IS AUTHORIZED

UNTIL AFFECTED DOCUMENT IS UPDATED.

MEO CHANGE TYPE

4) Normal - Can be implemented with normal priorityPRIORITY IMPLEMENTATION CATEGORY

UH60 DAA

DMWR 1-1615-287, dated 30 DEC 2011 MEC B314505, MEO B2282 6 JUL 16, 18 FEB 16

CCAD Process Std D05, TN 164336 30 April 13, 26 JUL 16

DOCUMENT CHANGE IS REQUIRED Verification: Hands-On Table-Top None

2-2.9, 3-10.4.4, 3-11.5.6, 3-11.5.15 : ADDED in-process corrosion preventive requirements for all unpainted surfaces of aluminum, magnesium, steel parts and electrical connector plugs and contact pins with corrosion preventive compound (CPC) per new Table 3-2.1.

GRZELECKI.DAN

IEL.P.125929525

Digitally signed by

GRZELECKI.DANIEL.P.1259295250

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=GRZELECKI.DANIEL.P.1259295250 Date: 2016.08.11 09:11:32 -05'00'

BEARD.SAMUEL.

LEE.1390444830

Digitally signed by

BEARD.SAMUEL.LEE.1390444830

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=CONTRACTOR, cn=BEARD.SAMUEL.LEE.1390444830 Date: 2016.08.11 08:41:24 -05'00'

Samuel L. Beard

HORN.REINHOL

D.J.1087783495

Digitally signed by

HORN.REINHOLD.J.1087783495

DN: c=US, o=U.S. Government, ou=DoD, ou=PKI, ou=USA, cn=HORN.REINHOLD.J.1087783495 Date: 2016.08.12 08:34:27 -05'00'

Daniel P. Grzelecki Reinhold J. Horn PUBLICATION CHANGE REQUEST: REQUEST THAT THE FOLLOWING DATA BE INCLUDED IN THE NEXT

CHANGE OR REVISION TO THE PUBLICATION IDENTIFIED ABOVE.

WP NO. PAGE

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TABLE

NO.

CHANGES

(EXACT WORDING OF CHANGES MUST BE GIVEN)

2-1

2-2.9.

ADD new sentence after the last sentence in this paragraph:

"Apply the appropriate corrosion preventive compound (CPC) or surface treatment as identified in Table 3-2.1 to all unpainted aluminum, magnesium and steel surfaces and to electrical connector plugs and contact pins immediately after disconnection. CPC to remain on these surfaces during all phases of depot level processing and is to be re-applied if storage or process time exceeds that specified in Table 3-2.1."

Distribution Statement D:- Distribution authorized to Department of Defense and U.S. DoD contractors only to protect critical technology effective as of 26 June 2014. Other requests for this document must be referred to U.S. Army Aviation and Missile Research, Development and Engineering Center, ATTN: RDMR -AEM , Corpus Christi, TX 78419-5211

MED FORM 24 FEB 2016

W58RGZ-17-R-0237

Attachment 0015

Continuation Sheet

MEO NO.

PAGE of

WP NO. PAGE

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(EXACT WORDING OF CHANGES MUST BE GIVEN)

MED FORM 15-DEC-09 1401-R-E

3-20

3-25

3-26

3-28.1

3-10.4.4.

1.1.c.

3-10.4.4.

6.1.5.d.

3-11.5.6.

3-2.1

ADD new paragraph as follows:

"c. Apply the appropriate corrosion preventive compound (CPC) or surface treatment as identified in Table 3-2.1 to all unpainted aluminum, magnesium and steel surfaces and to electrical connector plugs and contact pins immediately after disconnection. CPC to remain on these surfaces during all phases of depot level processing and is to be re-applied if storage or process time exceeds that specified in Table 3-2.1."

ADD new CAUTION after the existing CAUTION preceding this paragraph:

"CAUTION

Apply the appropriate corrosion preventive compound (CPC) or surface treatment as identified in Table 3-2.1 to all unpainted aluminum, magnesium and steel surfaces and to electrical connector plugs and contact pins immediately after disconnection. CPC to remain on these surfaces during all phases of depot level processing and is to be re-applied if storage or process time exceeds that specified in Table 3-2.1."

ADD new Table "Table 3-2.1. In Process Corrosion Prevention Requirements" found on page 4 of this MEO:

ADD new sentence after the last sentence in this paragraph:

"Apply the appropriate corrosion preventive compound (CPC) or surface treatment as identified in Table 3-2.1 to all unpainted aluminum, magnesium and steel surfaces and to electrical connector plugs and contact pins immediately after disconnection. CPC to remain on these surfaces during all phases of depot level processing and is to be re-applied if storage or process time exceeds that specified in Table 3-2.1."

MED FORM 24 FEB 2016

B 2481

Continuation Sheet

MEO NO.

PAGE of

WP NO. PAGE

NO.

PARA-

GRAPH

FIGURE/

TABLE

NO.

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(EXACT WORDING OF CHANGES MUST BE GIVEN)

MED FORM 15-DEC-09 1401-R-E

3-30

C-7

3-11.5.

15.

C-1

REPLACE the last sentence in this paragraph with the following:

"Apply the appropriate corrosion preventive compound (CPC) or surface treatment as identified in Table 3-2.1 to all unpainted aluminum, magnesium and steel surfaces and to electrical connector plugs and contact pins immediately after disconnection. CPC to remain on these surfaces during all phases of depot level processing and is to be re-applied if storage or process time exceeds that specified in Table 3-2.1."

ADD the following Items to "Table C-1. Expandable Supplies and Materials List Continued":

ITEM NATIONAL STOCK DESCRIPTION U/M

NUMBER NUMBER

125 8030-01-149-1731 Corrosion Preventive Compound, MIL-PRF-16173 Grade 2, (80244)

126 8030-00-244-1293 Corrosion Preventive Compound, MIL-PRF-16173 Grade 3, (80244)

127 8030-00-903-0931 Corrosion Preventive Compound, MIL-PRF-16173 Grade 4, (80244)

128 8135-00-292-9728 Barrier Material, Greaseproof, Waterproof, MIL-PRF-121, (81349)

129 8030-00-213-3279 Corrosion Preventive Compound, MIL-PRF-81309 Type 2, (80244)

130 8030-00-546-8637 Corrosion Preventive Compound, MIL-PRF-81309 Type 3, (80244)

131 6850-01-328-3617 Cleaning And Lubricating Compound, MIL-L-87177 Grade B, (81349)

132 9150-00-231-6689 Lubricating Oil ,Utility, MIL-PRF-32033, (81349)

133 8135-00-092-3220 Material, Greaseproof, Waterproof, MIL-PRF-18705 Type 1, (80244)

134 8105-01-215-4752 Barrier Material, Greaseproof, Waterproof, MIL-PRF-18705 Type 3, (80244)

135 8030-00-065-0957 Corrosion Resistant Coating, Chemical, MIL-DTL-81706 1A, (80244)

MED FORM 24 FEB 2016

B 2481

Continuation Sheet

MEO NO.

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MED FORM 15-DEC-09 1401-R-E

Table 3-2.1. In Process Corrosion Prevention Requirements

Storage or Process Time

Aluminum

Magnesium

Steel

Composite

(Non-Metals)

Electrical Connectors

Moving, All- Metal Parts Requiring Lubrication

<1 Hour

A, C, D, I

A, B, C, D, I

J

B, E, G

F,H

1-7 Days

1-4 Weeks

A

A, C

1-7

Months

>7 Months

Legend

Cover parts with Corrosion Preventive Compound (CPC) Grade 2 (App. C, item 125) and loosely wrap in Grease Proof Barrier Material (App. C, item 128). CPC Grade 2 (App. C, item 125) is used to protect the parts from corrosion during re-work, shipment, and storage.

B

Cover parts with CPC Grade 3 (App. C, item 126) and loosely wrap in Grease Proof Barrier Material (App. C, 128). CPC Grade 3 (App. C, item 126) is used for displacement of water, and short term surface corrosion protection. This process is required during shipment, storage, and re-work.

C

Cover parts with CPC Grade 4 (App. C, item 127) and loosely wrap in Grease Proof Barrier Material (App. C, 128). CPC Grade 4 (App. C, item 127) is used to protect the parts from corrosion during indoor storage when a transparent coating is required. This process is also required corrosion protection for internal flight control cables.

D

Cover parts with CPC Type II (App. C, item 129) and loosely wrap in B Grease Proof Barrier Material (App.

128). CPC Grade Type II (App. C, item 129) is used for the displacement of water, and short term surface corrosion protection; during shipment, storage, and re-work. This required process all provides corrosion protection to moving parts such as hinge areas, bomb racks, and sliding parts.

To meet this category a Lubricating Oil (App. C, item 132) must be added frequently to parts to maintain lubrication.

E

Cover parts with CPC Type III (App. C, item 130) and loosely wrap in Grease Proof Barrier Material (App. 128). CPC Type III (App. C, item 130) is used for displacement of water, and corrosion protection. Application includes: avionics equipment, electrical connector plugs and contact pins.

F

Cover parts with Cleaning & Lubricating Compound (C&LC) Grade B (App. C, item 131) and loosely wrap in Grease Proof Barrier Material (App. C, item 128). C&LC Grade B (App. C, item 131) is used for corrosion protection of moveable parts requiring minimal lubrication. Together CPC Type II (App. C, item 129) and Lubricating Oil (App. C, item 132) provides better water displacement/corrosion protection.

G

Cover parts with either Grease Proof Barrier Material Type 1 or 3 (App C. item 133, or 134). Type 1 (App.

C item 133) is water vapor, electrostatic, and electromagnetic resistant. This protection is used on microcircuits, semiconductors, transistors, and sensitive resistors. Type 3 (App. C, item 134) is used where a transparent, electrostatic, water resistant barrier is required. This Type is limited to a wrap or bag.

H

Cover parts in Lubricating oil (App. C, item 133) and loosely wrap in Grease Proof Barrier Material (App. C, item 128). This combination is used in low temperature (up to -40 °F) conditions where water displacing lubricant is required. Must re-apply frequently to prevent product failure.

I

Fluid Film AS (Non-Aerosol “NAS” Pump) is a solvent free and non-toxic alternate CPC. This alternative CPC is available for use if the prior listed CPC’s are prohibited by regulations.

J

Composite parts with exposed aluminum lightning mesh or lightning foil require immediate coverage with a Corrosion Resistant Coating (App. C, item 135). Exposed surfaces must be treated immediately after removal of primer.

MED FORM 24 FEB 2016

B 2481