DFDR Record Version or DFDR Data Rate not correct

TASK 31-33-00-810-825-A
DFDR Record Version or DFDR Data Rate not correct

1. Possible Causes

2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TSM TASK 31-33-00-810-801-A	DFDR Inoperative
AMM 31-33-00-710-001	Operational Test of the Power Interlocks and Status Monitoring
AMM 31-33-00-710-010	Procedure to Use the Aircraft Coding Plug 197VC-A
ASM 313301
AWM 313403

3. Fault Confirmation
Subtask 31-33-00-710-068-A

A. Test
(1) Do the operational test of the power interlocks and status monitoring AMM 31-33-00-710-001.

4. Fault Isolation
Subtask 31-33-00-810-059-A ** ON A/C NOT FOR ALL

A. Procedure
(1) If the test gives the maintenance message DFDR:

Do the troubleshooting procedure of the DFDR [1TU] (Ref. TSM TASK 31-33-00-810-801).

(2) If the fault continues:

Do a check of the correct record version on the aircraft coding plug 197VC pin PP, NN, MM AWM 313403 and AMM 31-33-00-710-010.

(3) If the fault continues:

Do a check of the correct DFDR data rate on the DFDR connector pin AA/17 and AA/18 ASM 313301.

(4) If the fault continues:

(5) If the failure continues:

Subtask 31-33-00-810-059-B ** ON A/C NOT FOR ALL

A. Procedure
(1) If the test gives the maintenance message DFDR:

Do the troubleshooting procedure of the DFDR [1TU] (Ref. TSM TASK 31-33-00-810-801).

(2) If the fault continues:

Do a check of the correct record version on the aircraft coding plug 197VC pin PP, NN, MM AWM 313403 and AMM 31-33-00-710-010.

(3) If the fault continues:

Do a check of the correct DFDR data rate on the DFDR connector pin AA/17 and AA/18 ASM 313301.

(4) If the fault continues:

(5) If the failure continues:

Subtask 31-33-00-710-069-A

B. Do the test given in paragraph 3.A. again.

[Rev.8 from Aug 2018] 2026.04.04 04:30:01 UTC