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AO_B787_LG_275

By Hector Morales,2014-05-17 11:47
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AO_B787_LG_275

    Analysis and Observation (A&O) Report Form

SECTION 1 PROGRAM

    INFORMATION

    1.1 Program Name B787

    1.2 ACM Project Name B7E7

    1.3 ACM Subproject Name B7E7FMS

    1.4 Load Delivery Target B787_LD_8

    1.5 Build Number SBC784_81C

    SECTION 2 A&O

    GENERAL INFORMATION

    AO_B787_LG_275 2.1 A&O Number

2.2 Date Opened June 3, 2009

    2.3 Originator Name Tu Hong

    Highlight in BOLD the problem category for this A&O by choosing from one of 2.4 A&O Category

    the following:

    SRD related:

    1. Missing SRD requirement

    2. SRD/SDD mismatch

    3. SRD/CODE mismatch

    4. SRD/SDD/CODE mismatch

    5. High Level Requirements

    6. Requirement Not testable

    7. Incomplete requirements

    8. Trace Error

    SDD related:

    9. Missing SDD requirement

    10. SDD/CODE mismatch

    11. Trace Error

    CODE related:

    12. Missing CODE

    13. CODE error

    14. Trace Error

    Other:

    15. Other

    2.5 CTP Name CTP_B787_LG_PATH_DEF_PKG

    2.6 A&O SCR Number

    Reference

    2.7 Comments

    SECTION 3 A&O

    DESCRIPTION

    3.1 A&O Description The condition 1 from SRD anchor LG_SRD_248382:

    When LG_PREDICTIONS_STATE is LOCKED, and the

    PERF_DESCENT_PATH_VALID becomes false, Then

    LG_PREDICTIONS_STATE to INACTIVE.

    But in the code, when LG_PREDICTIONS_STATE is LOCKED, and the

    PERF_DESCENT_PATH_VALID becomes false then the procedure

    Lg_Reset_Predictions_State is called, setting LG_PREDICTIONS_STATE to

    INACTIVE needs another condition PERF_PREDS_AVAILABLE for the

    Active FPLN becomes false,

    This condition is missed in the condition 1 of SRD anchor LG_SRD_248382.

    The condition 2 matched the newest code.

    Page 1 of 3 Last updated on: June 1, 2006

    Analysis and Observation (A&O) Report Form

3.2 Comments

    SECTION 4 A&O STATUS

    No. Date Name Comment 4.1 6/3/09 Lucas Chen A&O is opened by HTSL-C Engineer. 4.2 06/11/09 Sudhakar R M Issue 1: Problem has been documented in the Requirement

    SCR 2858.

    The condition 1 in the SRD anchor LG_SRD_248382 needs to

    be updated as follows:

    1. the LG_PREDICTIONS_STATE is LOCKED, the

    PERF_DESCENT_PATH_VALID becomes

    False and the PERF_PREDS_AVAILABLE for

    The Active FPLN becomes false.

4.3

    4.4

    4.5

    SECTION 5 SRD

    5.1 SRD Element Name FMF_LG_PATH_DEF.SRD

    5.2 SRD Element Generation 116

    Number

    5.3 SRD Anchor LG_SRD_248382

    The FM partition shall set the LG_PREDICTIONS_STATE to INACTIVE 5.4 SRD Requirement Text

    when either of the following is satisfied:

     1. the LG_PREDICTIONS_STATE is LOCKED, and the

    PERF_DESCENT_PATH_VALID becomes

     false

     2. the LG_PREDICTIONS_STATE is UNSTABLE or STABLE, and the

    PERF_PREDS_AVAILABLE for

     the Active FPLN becomes false.

    ANCHOR : LG_SRD_248382

    5.5 Comments

    SECTION 6 SDD

    7.1 SDD Element Name

    7.2 SDD Element Generation

    Number

    7.3 SDD Anchor

     7.4 SDD Requirement Text

    SECTION 7 CODE

    9.1 CODE Element Name LG_PATH_DEF_PKG.ADA

    9.2 CODE Element 60

    Generation Number

    9.3 CODE Anchor LG_CODE_248642

    LG_CODE_248643

    9.4 CODE Procedure Lg_Update_Predictions_State

    Procedure/Function Name Procedure Lg_Reset_Predictions_State

    9.5 CODE Line Number(s) Lines from 1436 to 1441 and lines 1357, 1358

     9.6 CODE Text

     when others => -- PREDICTIONS_STABLE | PREDICTIONS_LOCKED

     if Descent_Path_Mgr.Valid(Act_Prov_Index_Manager.Act_Index)

    then

     Lg_Stabilize_Predictions_State(State_Changed);

     else

     Lg_Reset_Predictions_State;

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    Analysis and Observation (A&O) Report Form

     State_Changed := True;

    ---

     if NOT

    OPS_Perf_Change_Flags_Mgr_Pkg.Perf_Preds_Available(Act_Prov_Inde

    x_Manager.Act_Index)

     then Lg_Efis_Data_Mgr_Pkg.Lg_Predictions_State :=

    PREDICTIONS_NOT_POSSIBLE;

    9.7 Comments

    Page 3 of 3 Last updated on: June 1, 2006

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