737MAX-FTD-31-23001

Digital Flight Data Acquisition Unit (DFDAU) Airplane Condition Monitoring System (ACMS)
Software Updates – Block Point 1.3 and 1.4

737 MAX运营商在DFDAU上经历了几种不同的故障模式。波音公司已经为在役问题和DFDAU增强功能列表打开了服务相关问题（SRP）。SRP中的一部分问题将纳入两个不同的块点软件升级中。

Block Point 1.3正在更新ACMS基线数据库软件（31 DFDAU ACMS基线DB）和数字ACMS记录（DAR）航空公司可修改信息（AMI）（31 DFDAU ACMS DAR AMI）。BP 1.4正在更新ACMS操作软件（31 DFDAU ACMS OPS）。

Block Point 1.3:

1. Address extraneous ECS Under-Overpressure Temperature Manifold High and Low reports (B07)
2. Fix Cruise and Climb data misalignment in ACMS reports
3. Update Engine Electronic Controller (EEC) maintenance words in ACMS Engine reports
4. Fix Auxiliary Power Unit (APU) cycle count in ACMS reports and DAR map
5. Edit to all baseline ACMS reports to include the year in the report header
6. DAR map update

Block Point 1.4:

7. Fix ACMS report generation and downlink settings being reset (NVM Reset)
8. Fix CFast card date and timestamp misalignment
9. Fix an issue causing the ACMS prompt not displaying on MCDU (ACMS Application Exception)
10. Address an issue causing ACMS reports to stop generating (ACMS Application Exception)
11. Fix intermittent ACMS reports not being transferred to ONS
12. Allow negative modifiable constant values
13. Fix Real Time DITS (ARINC 429) report (requested by uplink)
14. Increase memory allocation to allow larger baseline and operator application

已依据SB及SL下发EO升级ACMS软件。