Removal of the Avionics Ventilation Skin Temperature Sensor
TASK 21-26-13-000-001-A
Removal of the Avionics Ventilation Skin Temperature Sensor
1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment
B. Work Zones and Access Panels
C. Referenced Information
3. Job Set-up
Subtask 21-26-13-020-051-C
[Rev.10 from 2021]
2026.04.02 06:11:02 UTC
Removal of the Avionics Ventilation Skin Temperature Sensor
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 2M (6 FT) - ADJUSTABLE |
| No specific | AR | CAP - BLANKING |
| No specific | AR | SAFETY CLIP - CIRCUIT BREAKER |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| 126 | LATERAL AVIONIC COMPARTMENT |
| 822 |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 24-42-00-861-001-A | Energize the Ground Service Network from the External Power |
CAUTION:
USE ONLY THE GROUND SERVICE NETWORK TO SUPPLY ELECTRICITY BECAUSE THE AVIONICS VENTILATION SYSTEM IS NOT SERVICEABLE. IF YOU ENERGIZE THE AIRCRAFT ELECTRICAL CIRCUITS WITHOUT THE VENTILATION SYSTEM YOU WILL CAUSE DAMAGE TO ELECTRICAL EQUIPMENT.
Subtask 21-26-13-861-050-A Subtask 21-26-13-865-050-A B. Open, safety and tag this(these) circuit breaker(s):
Subtask 21-26-13-010-050-A | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C ALL | |||
| 49VU | AIR COND/AVNCS VENT/CTL | 6HQ | D06 |
| 49VU | AIR COND/AVNCS VENT/CTL | 5HQ | D05 |
| 122VU | AIR COND/AVNCS/VENT/MONG | 3HQ | Y17 |
C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(2) Open the access door 822.
4. Procedure(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position at the access door 822.
(2) Open the access door 822.
Subtask 21-26-13-020-051-C
A. Removal of the Avionics Ventilation Skin Temperature Sensor
(1) Disconnect the electrical connector (5) from the sensor (6).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the six screws (4) and washers (3).
(4) Remove the cover (2) from the support (1).
(5) Remove the blanket (7) from the support (1).
(6) Cut and remove the lockwire from the sensor (6).
(7) Remove the sensor (6).
(1) Disconnect the electrical connector (5) from the sensor (6).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the six screws (4) and washers (3).
(4) Remove the cover (2) from the support (1).
(5) Remove the blanket (7) from the support (1).
(6) Cut and remove the lockwire from the sensor (6).
WARNING:
USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
(a) Cut and remove the lockwire from the sensor (6). (7) Remove the sensor (6).
Skin Temperature Sensor