Update on Global series MMEL status
Effectivity: All Global series aircraft
ATA: 00-00
By: Stephane Beauchamp – Technical Services Here, we have provided an update on regulatory agencies’ Master Minimum Equipment List (MMEL) for Bombardier Global series aircraft.
Global Express aircraft – BD-700-1A10 & BD-700-1A11 status:
Transport Canada (TCCA) Revision 8 released August 2022, and its most current Temporary Revisions (TRs) are discussed within this article. Revision 8 changes also incorporate all TRs since the previous MMEL, Revision 7.
Temporary Revision TR-20 specifically documented the Version V5.8 Advanced Avionics Upgrade (AAU) software (aka Tech Insert Phase 1) and includes new Crew Alert. Subsequently, TR-21 added AFDX Network Port Lock and TR-22 converted (Maintenance) to (Operational) procedure allowing more flexibility for dispatch by the flight crew.
The European Aviation Safety Agency (EASA) released Revision 9 last November 2022
and incorporated changes associated with Transport Canada’s (TCCA) TR-20 revision. A new Revision 10 proposal was sent to EASA last May 2023 for review and approval; this introduces similar changes per TCCA TR-21 and 22.
The Federal Aviation Administration (FAA) MMEL has not been updated since Revision 15 dating to 2021. As a result, a recent Flight Operation Evaluation Board (FOEB) review was completed last April 2023 for the next Revision 16. These changes seek to align the FAA MMEL with TCCA Revision 8 including TR-20, TR-21 and dispatch relief for single channel DCU inoperative on Global 5000 GVFD and Global 6000. Subsequently, per the FAA Flight Standards process, this draft MMEL will be open for comments on their portal prior to final approval and publishing.
The documents are accessible through the Bombardier Customer Portal https://customer.aero.bombardier.com/cic/public/. Click on the following links to navigate to the associated MMEL:
TCCA:
Rev 8 – Posted August 22, 2022:
Incorporated TCCA Guidance Book, Rev. 8 updates, clerical correction, amended and new reliefs for Global Classic platform (refer to the MMEL Highlights of Changes section for more details)
Additional changes included, but not limited to the following items:
Modification to MMEL preamble to clarify aircraft effectivity
Modification to “Extended Range (ER) Operations” definition which uses “60 minutes” as a basis or provides specific time limits where applicable
DCU One Channel Failure (M) to (O) change
Amended Portable Maintenance Access Terminal (PMAT) Category C to D
New relief for various fan failures (Display, Data Concentrator Unit, IPC Cover & Environment Module)
Incorporation of TR-12 through TR-19:
TR-12 – Synthetic Vision System (SVS) clarification and addition of IMS relief for fail advisory
TR-13 – Enhanced Vision System (EVS) heat and ice protection reduced restrictions
TR-14 – Drain Master Heaters split from Potable Water System for clarity
TR-15 – Global 5000 Decompression Panel Louvers new relief
TR-16 – Radio Altimeter relief modified, confirmation of disconnected auto-throttles, new relief for Hydraulic Shutoff Valve (SOV) and clarified Transponder relief associated to ADS-B Out
TR-17 – Global 5500/6500 new Model Designation
TR-18 – DCU Channel Fail Relief for Global 5000/6000
TR-19 – New Engine Turbine Case Cooling Valve (TCCV) Fault relief for Global 5500/6500
TR-20 – Dated September 16, 2022:
Avionic Version V5.8 changes to provide relief for new CAS messages:
CDTI FAIL – Cockpit Display of Traffic Information (ADS-B In)
DATALINK FAIL – Improvement on channel identification
SVS CAS Messages – Relief for new SVS CAS messages
WXR CAS Messages – Relief for new Weather Radar CAS messages
TR-21 – Dated January 31, 2023:
AFDX Network Port Lock
TR-22 – Dated March 27, 2023:
(M) to (O) procedure summary of changes (refer to the MMEL for details):
ATA 21 – Changes to five Air Conditioning related procedures
ATA 22 – Two changes to Auto Throttle procedures
ATA 23 – Two Crew Rest procedure changes
ATA 24 – Two changes to Electrical Power procedures
ATA 25 – Three changes to Equipment/Furnishing procedures
ATA 26 – Change to a single Portable Fire Extinguisher procedure
ATA 27 – Three changes to Flight Control procedures
ATA 28 – Changes to six Fuel System related procedures
ATA 29 – Change to a single Hydraulic Pump Low Pressure procedure
ATA 30 – Changes to five Ice and Rain Protection related procedures
ATA 32 – Changes to two Landing Gear related procedures
ATA 33 – Changes to two Interior Light related procedures
ATA 34 – Changes to six Navigation Avionics related procedures
ATA 35 – Changes to three Oxygen System related procedures
ATA 36 – Change to a single Pneumatic System procedure
ATA 73 – Change to a single Engine Fuel and Control procedure
EASA:
Rev 9 – Published on Bombardier Customer Portal November 30, 2022:
Alignment with TCCA TR-20
Weather Radar and Control Relief clarification
SSR Transponder Downlink Aircraft Parameter (DAP) relief
FAA:
Rev 15 – Posted March 01, 2021:
Added Global 5500/Global 6500 model designation. A table was added to the MMEL to provide a cross-reference between the different relief effectivities
Global 7500 aircraft – BD-700-2A12 status:
TCCA Revision 4, released May 2022, included changes to standardize the definitions used throughout the document. It also modified the relief of a few other items. Current Temporary Revision (TR-1) was released last March 2023 addressing Category II operation and Auto Flight Crew Altering Messages (CAS).
EASA Revision 3 released May 2022 aligned with the TCCA MMEL Revision 4.
FAA MMEL, Revision 2 released June 2022 included modifications incorporated into the TCCA MMEL Revision 4. Most notable was the modification of the Extended Range (ER) Operations diversion time limitations within the document.
TCCA:
Rev 4 – Posted May 5, 2022:
Deleted relief:
Transformer Rectifier Unit (TRU) 1
TRU Line Contactor (TLC) 1
ESS TRU FAN INOP CAS
TRU FAN INOP CAS
TR-1 – Dated March 30, 2023:
ATA 22 – Flight Director revised for Category II operation
ATA 34 – VHF Nav revised for Category II operation
ATA 22 – Eight Auto Flight CAS Message relief changes
EASA:
Rev 3 – Published on Bombardier Customer Portal May 5, 2022:
Alignment with TCCA MMEL Revision 4
FAA:
Rev 2 – Posted June 20, 2022:
Document changes indicated with change bars (refer to the MMEL Highlights of Changes section for more details)
HF Communication System extended repair category to D
Items revised per Policy Letters PL-100 Rev.3, PL-104 Rev. 7, PL105 Rev. 4 and PL- 132
Wing Cross-Bleed Valve “M” removed
System and CAS relief added:
Temperature Control panel
Engine Fire Detection Loop
Multifunction Spoiler (MFS) 3 System
Single Point pressure Refueling System (Auto/ Manual Fail)
Interior Pocket door
WXR L/R CTRL FAULT
APU/ ENG FIRE DETECTION REDUND LOSS
FLT SPLRS LEVER SENSO REDUND LOSS
FPCC INPUT REDUND LOSS for different systems sub systems
FUEL COMPUTER CH A/ CH B INOP
EVS ALIGN MODE
WXR PWS FAIL
ENG LPTACC and HPTACC VLV FAIL CLSD
Diversion time limitation changes:
Removed 22 instances of 60 minutes
Modified 18 instances of 60 minutes to 90 minutes
Modified four instances of 60 minutes to 180 minutes
Alignment with TCCA MMEL Revision 4 for the TRU