Removal of the Static Port Blanking-Plate

TASK 53-19-42-000-001-A
Removal of the Static Port Blanking-Plate

WARNING: BEFORE YOU OPEN PHC CIRCUIT BREAKERS 2DA1(2,3), OPEN PROBE HEATER CIRCUIT-BREAKERS 1DA1(2), 3DA1(2,3), 4DA1(2,3) AND 5DA1(2,3). IF YOU DO NOT OBEY THIS SEQUENCE: - THE PROBES WILL BECOME TOO HOT. - THIS CAN CAUSE DAMAGE TO EQUIPMENT AND INJURY TO MAINTENANCE PERSONNEL.

WARNING: MAKE SURE THAT THE CIRCUIT BREAKERS RELATED TO THE WEATHER RADAR ARE OPENED, SAFETIED AND TAGGED.

WARNING: MAKE SURE THAT:

THE STATIC PROBE IS NOT HOT
THE ELECTRICAL SUPPLY TO THE HEATING ELEMENT OF THE PROBE IS ISOLATED

BEFORE YOU START THE TASK.

ZONE: 120

1. Reason for the Job
Self Explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	SCRAPER - NON METALLIC

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
120	AVIONICS COMPARTMENT

C. Referenced Information

REFERENCE	DESIGNATION
Installation of the Static Port Blanking-Plate

3. Job Set-up
Subtask 53-19-42-865-050-A ** ON A/C NOT FOR ALL

A. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ANTI ICE/PROBES/AOA/1	4DA1	D04
49VU	ANTI ICE/PROBES/PHC/1	2DA1	D03
49VU	ANTI ICE/PROBES/PITOT/1	3DA1	D02
122VU	ANTI ICE/PROBES/PHC/3	2DA3	Y16
122VU	ANTI ICE/PROBES/2/TAT	1DA2	Y15
122VU	ANTI ICE/PROBES/2/PITOT	3DA2	Y14
122VU	ANTI ICE/PROBES/2/AOA	4DA2	Y13
122VU	ANTI ICE/PROBES/PHC/2	2DA2	Y12
122VU	ANTI ICE/PROBES/2/STATIC	5DA2	Y11
122VU	ANTI ICE/PROBES/3/PITOT	3DA3	Z16
122VU	ANTI ICE/PROBES/3/AOA	4DA3	Z15
122VU	ANTI ICE/PROBES/3/STATIC	5DA3	Z14
122VU	ANTI ICE/PROBES/1/STATIC	5DA1	Z13
122VU	ANTI ICE/PROBES/1/TAT	1DA1	Z12

Subtask 53-19-42-941-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 120.

Subtask 53-19-42-860-051-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(1) Remove the protective covers from the static probes.

4. Procedure
Subtask 53-19-42-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Static Port Blanking-Plate
(1) Use the SCRAPER - NON METALLIC to remove the sealants from the area between the static port blanking-plate (3) and the fuselage structure.
(2) Remove the screws (1) and (2).
(3) Remove the static port blanking-plate (3).

[Rev.10 from 2021] 2026.04.01 01:52:15 UTC