Slats - SFCC 1 and SFCC 2 Show PCU Valveblock Fault Message

TASK 27-81-00-810-836-A
Slats - SFCC 1 and SFCC 2 Show PCU Valveblock Fault Message

1. Possible Causes

flaps (and slats) control lever is out of detent

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
AMM 27-81-00-740-002	BITE Test of the Slat and Flap Control Computers (Slat System)

3. Fault Confirmation
Subtask 27-81-00-710-067-A

A. Test
(1) At the ECAM Control Panel, push the STS P/BSW to show the status page on the lower ECAM DU:

if a SLATS status message is not shown, there is no slats fault
if a SLATS status message is shown, do the fault isolation procedure given in Para. 4.

4. Fault Isolation
Subtask 27-81-00-810-085-A

A. Procedure
(1) Make sure that the flaps (and slats) control lever is in the correct detent and reset it if necessary:

if the SLATS status message has gone, there is no fault
if the SLATS status message stays, do the next step.

NOTE: When the flaps (and slats) control lever is out of detent, SFCC1 and SFCC2 will find that the lever position and the slats position (signal from the Valveblock PPU) disagree. The SLT 1 (2) PCU VALVEBLOCK 25CV (26CV) message will then be given by each SFCC and the ECAM message SLATS FAULT will be shown. This flight control configuration error can be cleared by a reset of the flaps (and slats) control lever.

(2) Do a BITE test of the SFCC1 and SFCC2 slats system AMM 27-81-00-740-002:

If the test gives a fault message, do the trouble shooting procedure related to this message.

[Rev.8 from Aug 2018] 2026.04.04 04:27:50 UTC