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Alert Details

Recovery Plan

Boeing 737-800 grounded at KDEN following IRS/ADIRU alignment failure. Seeking serviceable avionics support and parts to restore navigation capability and return the aircraft to service.

Alert Details

Alert type: AOG Alert
Added to platform: 22SEP26 1151Z
Aircraft model: Boeing 737-800
Aircraft series: Not specified
Engine model: CFM56-7B
ICAO location: KDEN
Impact type: Revenue PAX
MX window opens: 22SEP26 1149Z
RTS target: 24SEP26 0000Z
Wanted items: 4
Alert specifics: Unscheduled Maintenance
Airworthiness Directive (AD): Not specified
Service Bulletin (SB): Not specified
Check: Not specified
ATA 100 CHAPTERS: 34Navigation
Short fault name: IRS / ADIRU alignment failure
Error / fault indications: Both IRS/ADIRU channels fail alignment with persistent NAV ALIGN indications; aircraft unavailable for revenue service.
Troubleshooting status: Troubleshooting Incomplete - Additional Items may be required
TSM/FIM reference: Not specified
Roles and responsibilities: Supplier to provide traceable parts and qualified avionics technician; Southwest maintenance control to coordinate access, installation, testing, and final release.

ITEMS

Items in this alert

4 items

Parts & Rotables · WANTED

737-34-TRAY-07 - IRS mounting tray and connector kit

Item Id: 3FRUA

IRS mounting tray with installation hardware and connector backshell kit for Boeing 737-800 avionics bay.

Aircraft / Family: Boeing
ATA 100 CHAPTERS: 34Navigation
Required: 22SEP26 1800Z
Quantity: 1

Added to platform: 22SEP26 1155Z

DetailsClose

ITEM WORKFLOW

Item basics

Item Type: Parts & Rotables
Wanted / Available: Wanted
Item Title: IRS mounting tray and connector kit
Sales Copy: Not specified

ITEM DETAILS

Technical specifications

P/N / IPC REF: 737-34-TRAY-07
ALT P/Ns: Not specified
Description: IRS mounting tray with installation hardware and connector backshell kit for Boeing 737-800 avionics bay.
Rev or Version: Rev B
Quantity: 1
ACCEPTABLE MANUFACTURER(s): Boeing or approved equivalent
Manufacturer Type(s) Considered: OEM
Trace Required: OEM trace
Required Onsite D/T Z: 2026-09-22 18:00Z
Onsite Location Type: Hangar / Maintenance Facility
ATA 100 CHAPTERS: 34Navigation
Acceptable Release Documentation / Tag: FAA Form 8130-3

APPLICABILITY & CONDITION

Applicability and condition

Conditions Considered: Not specified
AIRCRAFT MODEL(s): Not specified
ENGINE MODEL(s): Not specified

TERMS

Terms

Purchase Type(s) Considered: Outright Purchase
Warranty Required: No
Warranty Terms: Not specified
Shipping (Incoterms): DAP

Parts & Rotables · WANTED

822-1330-201 - FMC CDU dual control display unit

Item Id: NKRRN

Dual control display unit / CDU for Boeing 737-800 flight management system; serviceable avionics unit with bench test report.

Aircraft / Family: Boeing
ATA 100 CHAPTERS: 34Navigation
Required: 22SEP26 2000Z
Quantity: 1

Added to platform: 22SEP26 1157Z

DetailsClose

ITEM WORKFLOW

Item basics

Item Type: Parts & Rotables
Wanted / Available: Wanted
Item Title: FMC CDU dual control display unit
Sales Copy: Not specified

ITEM DETAILS

Technical specifications

P/N / IPC REF: 822-1330-201
ALT P/Ns: Not specified
Description: Dual control display unit / CDU for Boeing 737-800 flight management system; serviceable avionics unit with bench test report.
Rev or Version: Rev C
Quantity: 1
ACCEPTABLE MANUFACTURER(s): Honeywell or approved equivalent
Manufacturer Type(s) Considered: OEM
Trace Required: OEM trace
Required Onsite D/T Z: 2026-09-22 20:00Z
Onsite Location Type: Hangar / Maintenance Facility
ATA 100 CHAPTERS: 34Navigation
Acceptable Release Documentation / Tag: FAA Form 8130-3

APPLICABILITY & CONDITION

Applicability and condition

Conditions Considered: Not specified
AIRCRAFT MODEL(s): Not specified
ENGINE MODEL(s): Not specified

TERMS

Terms

Purchase Type(s) Considered: Outright Purchase
Warranty Required: No
Warranty Terms: Not specified
Shipping (Incoterms): DAP

Parts & Rotables · WANTED

HG2030AC01 - ADIRU / IRS navigation unit

Item Id: GUAP4

Serviceable Honeywell-style ADIRU/IRS unit compatible with 737-800 navigation system; provide removal history and trace.

Aircraft / Family: Boeing
ATA 100 CHAPTERS: 34Navigation
Required: 22SEP26 1800Z
Quantity: 1

Added to platform: 22SEP26 1153Z

DetailsClose

ITEM WORKFLOW

Item basics

Item Type: Parts & Rotables
Wanted / Available: Wanted
Item Title: ADIRU / IRS navigation unit
Sales Copy: Not specified

ITEM DETAILS

Technical specifications

P/N / IPC REF: HG2030AC01
ALT P/Ns: Not specified
Description: Serviceable Honeywell-style ADIRU/IRS unit compatible with 737-800 navigation system; provide removal history and trace.
Rev or Version: Rev A
Quantity: 1
ACCEPTABLE MANUFACTURER(s): Honeywell
Manufacturer Type(s) Considered: OEM
Trace Required: OEM trace
Required Onsite D/T Z: 2026-09-22 18:00Z
Onsite Location Type: Hangar / Maintenance Facility
ATA 100 CHAPTERS: 34Navigation
Acceptable Release Documentation / Tag: FAA Form 8130-3

APPLICABILITY & CONDITION

Applicability and condition

Conditions Considered: Not specified
AIRCRAFT MODEL(s): Not specified
ENGINE MODEL(s): Not specified

TERMS

Terms

Purchase Type(s) Considered: Outright Purchase
Warranty Required: No
Warranty Terms: Not specified
Shipping (Incoterms): DAP

Maintenance Services · WANTED

On-site ADIRU R&R and alignment support

Item Id: U3AFF

Qualified avionics technician to remove and replace ADIRU/IRS as required, perform wiring checks, dual-channel alignment, BITE, and operational test for return to service.

Aircraft / Family: Boeing
ATA 100 CHAPTERS: 34Navigation
Required: 22SEP26 1800Z
Location: KDEN

Added to platform: 22SEP26 1159Z

DetailsClose

ITEM WORKFLOW

Item basics

Item Type: Maintenance Services
Wanted / Available: Wanted
Item Title: On-site ADIRU R&R and alignment support
Sales Copy: Not specified

ITEM DETAILS

Technical specifications

Description: Qualified avionics technician to remove and replace ADIRU/IRS as required, perform wiring checks, dual-channel alignment, BITE, and operational test for return to service.
Required Onsite D/T Z: 2026-09-22 18:00Z
Onsite Location Type: Hangar / Maintenance Facility
ATA 100 CHAPTERS: 34Navigation

APPLICABILITY & CONDITION

Applicability and condition

Conditions Considered: Not specified
AIRCRAFT MODEL(s): Not specified
Aircraft Model: Not specified
ENGINE MODEL(s): Not specified

OPERATIONAL CHANGES

Alert status updates

No visible status updates have been posted.

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Alert Details

Alert type

AOG Alert

Added to platform

22SEP26 1151Z

Aircraft model

Boeing 737-800

Aircraft series

Not specified

Engine model

CFM56-7B

ICAO location

KDEN

Impact type

Revenue PAX

MX window opens

22SEP26 1149Z

RTS target

24SEP26 0000Z

Wanted items

Alert specifics

Unscheduled Maintenance

Airworthiness Directive (AD)

Not specified

Service Bulletin (SB)

Not specified

Check

Not specified

ATA 100 CHAPTERS

34Navigation

Short fault name

IRS / ADIRU alignment failure

Error / fault indications

Both IRS/ADIRU channels fail alignment with persistent NAV ALIGN indications; aircraft unavailable for revenue service.

Troubleshooting status

Troubleshooting Incomplete - Additional Items may be required

TSM/FIM reference

Not specified

Roles and responsibilities

Supplier to provide traceable parts and qualified avionics technician; Southwest maintenance control to coordinate access, installation, testing, and final release.