1.
 Reason for the Job

__________________
 Self Explanatory

 2.
 Job Set-up Information

______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific blanking caps
 No specific circuit breaker(s) safety clip(s) R No specific 1 ACCESS PLATFORM 6M (20 FT) R No specific 1 SCRAPER - NON METALLIC
 B. Consumable Materials
 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. 08-074
 MASKING TAPE (Ref. 20-31-00)

R 1EFF : ALL 1 23-12-11Page 412 1 1 Feb 01/05 1 1 1CES 1 C. Referenced Information

 -------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
 23-12-11-991-003 Fig. 402 R **ON A/C 151-199, 401-499,
 23-12-11-991-003-A Fig. 402A
 **ON A/C ALL

 3. Job Set-up
__________
 Subtask 23-12-11-865-053

 A. Open, safety and tag this(these) circuit breaker(s):
 -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------
121VU COM NAV/VHF/3 2RC3 L05
 Subtask 23-12-11-010-051
 B. Get Access
 (1) Put the ACCESS PLATFORM 6M (20 FT) in position at Zone 254.
 4. Procedure
_________
 **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,

 (Ref. Fig. 402/TASK 23-12-11-991-003)
 1EFF : ALL 1 23-12-11Page 413 1 1 Aug 01/05 1 1 1CES 1

 VHF Antenna.
 Figure 402/TASK 23-12-11-991-003

R 1EFF : 001-049, 051-099, 101-149, 201-299, 1 23-12-11Page 414 1301-399, 1May 01/05 1 1 1CES 1R **ON A/C 151-199, 401-499,

 (Ref. Fig. 402A/TASK 23-12-11-991-003-A)
 **ON A/C ALL

 Subtask 23-12-11-020-052
 A. Removal of the VHF Antenna
 (1)
 Remove the sealant from the heads of the screws (2) with a SCRAPER -NON METALLIC.

 (2)
 Remove the sealant from the antenna base (1) and the fuselage structure with a SCRAPER - NON METALLIC.

 (3)
 Remove the screws (2) from the antenna (1).

 (4)
 Lift the antenna (1) until you can see the coaxial cable connector (3).

 (5)
 Disconnect the coaxial cable connector (3) from the antenna connector (4).

 (6)
 Safety the coaxial cable (5). Put masking tape BONDING AND ADHESIVE COMPOUNDS (Material No. 08-074) around the coaxial cable (5) and attach it to the fuselage.

 (7)
 Put blanking caps on the disconnected electrical connectors.

 (8)
 Remove and discard the O-ring (6) from the antenna (1).

 1EFF : ALL 1 23-12-11Page 415 1 1 Aug 01/05 1 1 1CES 1

 VHF Antenna Figure 402A/TASK 23-12-11-991-003-A
R 1EFF : 151-199, 401-499, 1 23-12-11Page 416 1 1 Aug 01/05 1 1 1CES 1 1EFF : ALL 1 23-12-11Page 417 1 1 Feb 01/05 1 1 1CES 1

 TASK 23-12-11-400-002
 Installation of the VHF Antenna (4RC3)
 1. Reason for the Job__________________
 Self Explanatory
 2. Job Set-up Information______________________
 A. Fixtures, Tools, Test and Support Equipment
 -------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
R R  No specific No specific  1 ACCESS PLATFORM 6M (20 FT) 1 SCRAPER - NON METALLIC
 B. Consumable Materials
 -------------------------------------------------------------------------------
REFERENCE DESIGNATION -------------------------------------------------------------------------------
R R R R R R R  Material No. 05-013 Material No. 08-074Material No. 09-016 Material No. 09-019 Material No. 11-003 Material No. 11-03 Material No. 16-021 Material No. 19-003  D TV-53-3507/73 RELEASE AGENT (OBSOLETE USE 05-013A) (Ref. 20-31-00) MASKING TAPE (Ref. 20-31-00) USA MIL-PRF-81733D TYPE II CLASS B CORROSION INHIBITING FILLET CONSISTENCY (Ref. 20-31-00)USA AMS 3267/3 LOW ADHESION CORROSION INHIBITING SEALANT (Ref. 20-31-00)USA ASTM D 740 METHYL-ETHYL-KETONE (Ref. 20-31-00) USA AMS 1526 RAIN REPELLENTREMOVER (Ref. 20-31-00) F ASNB70720 FLEXIBLE POLYURETHANE (Ref. 20-31-00)USA AMS 3819 LINT-FREE COTTON CLOTH (Ref. 20-31-00)
　
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