Global Changes

A Global Change is an approved addendum to all affected existing MMELs and in accordance with TP 9155 (Rev. 4) paragraph 2.6.5, affected MELs should be amended accordingly. Some wording changes may be required to cater to a particular aircraft configuration. Approval of the revised MEL shall be gained using normal procedures or as otherwise directed in the new MMEL Item. 

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Global Change 5
Global Change 4
Global Change 3
Global Change 2
Global Change 1

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Global Change 5

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This Transport Canada Master Minimum Equipment List (MMEL) GC addresses the following TC MMEL Guidance Book (GB) Items.  

23.8    Crew Member Interphone System
23.9    Passenger Address System
23.10   Handsets
23.11   Alerting System
26.8    Lavatory Fire Extinguisher Systems
26.9    Lavatory Smoke Detection Systems
38.1    Potable Water Systems
38.2    Lavatory Waste Systems

items, so although there are a significant number of revision bars for GB Items 23.3, 23.8, 23.9, 23.10, and 23.11, most of the changes have resulted from moving that item from another page. Revision bars are based on changes to the GB at Rev. 05, dated 05 May 00 and the content of each item is identical to the relief provided in GB at Rev. 06, dated 15 Feb. 02. 

 Specifically, the addition of these enhanced security requirements has been designated as Transport Canada Global Change 5 (TCGC-5).

SUBJECT: ENHANCED SECURITY REQUIREMENTS

 Discussion:

As a result of the September 11 hijackings, enhanced security initiatives have been instituted by the FAA, and Transport Canada has agreed to parallel these initiatives as much as possible. These initiatives include the requirement to ensure that installed flight deck doors are locked and additional equipment such as flight deck to cabin communication equipment are operative for dispatch.  This TCCA GC is compatible with the requirements of FAA PLs 9, 24 and 83, revising the 8 items listed above and detailed in the following pages.

W.R. Jupp
Chief
Aircraft Certification, Flight Test
for Minister of Transport

15-02-02
TCGC-5 (Original) 

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Global Change 4

When granting relief for items which have cargo area fire related implications the following non-combustible material description is applicable when it is desired to carry ballast:

Unit Load Devices (ULDs) may be carried in the associated compartment provided no cargo is carried on or in these devices. For ballast purposes, use of bags (made of fibreglass or Kevlar) of sand or ingots of non-magnetic metals (such as lead) is acceptable.

This GC is an approved addendum to all affected existing MMELs. An operator may seek use of the specific relief by revising the affected Minimum Equipment List (MEL). In doing so, the description, where applicable shall be copied verbatim into the MEL as a NOTE. Approval of the revised MEL shall be gained using normal procedures or as otherwise directed in the new MMEL Item.

SUBJECT: NON-COMBUSTIBLE MATERIALS REQUIRED TO BE CARRIED FOR BALLAST PURPOSES

Discussion:

To date industry has not been able to provide a definition of non-combustible materials which is acceptable to Transport Canada. However, because there is occasionally a need to carry ballast, it is considered appropriate to publish a description of permissible ballast so that MMEL relief can be granted for some items which have cargo area fire related implications. The TC MMEL Guidance Book related items to date are:

• Air Conditioning and Pressurization Control Modes
• Air Conditioning Packs
• Baggage or Cargo Compartment Smoke Detectors

The above mentioned description of permissible ballast is in direct response to an industry proposal. Other materials will be addressed as necessary.

OSB

W.R. Jupp
Acting Chief
Aircraft Certification, Flight Test
for Minister of Transport

98 04 23
TCGC-4 (Original) 1/1

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Global Change 3

Transport Canada Master Minimum Equipment List (MMEL) Guidance Book Item

23.3 Cabin Service Interphone System (Flight Deck/Cabin and Cabin/Cabin), passenger carrying operations as a catergory B

is designated Transport Canada Global Change 3 (TCGC-3).

This GC is an approved addendum to all affected existing MMELs. An operator must revise affected Minimum Equipment Lists (MELs) by assigning a category B for this item in passenger carrying operations. Approval of the revised MEL shall be gained using normal procedures or as otherwise directed in the new MMEL Item.

SUBJECT: CABIN SERVICE INTERPHONE SYSTEM (FLIGHT DECK/CABIN and

CABIN/CABIN) FOR PASSENGER CARRYING OPERATIONS

Discussion:

Following an aircraft crash in the U.S. in which an on board fire had occurred, there was considerable discussion regarding the Cabin Service Interphone System in terms of its serviceability, appropriateness of MMEL relief and the issue of communication between the flight deck and the cabin by opening the flight deck door with smoke in the aircraft. This System is clearly required for emergency procedures; yet, like the Public Address System, relief is permitted. This is in violation of the MMEL principle that, equipment which is required to complete an emergency procedure must be operative. However, because the associated procedures are not usually addressed in the Airplane Flight Manual and are not related to direct control of the airplane, relief has been permitted. It is noted the PA System relief is a category B.

At a 1997 FAA MMEL Flight Operations Policy Board (FOPB) meeting with industry, the argument was made that this item is repaired within three days in most cases. Notwithstanding, during the deliberations for the TC MMEL Guidance Book in Jan 98, this increase in category was proposed to Canadian industry. Although there was some industry objection to increasing the category because of the U.S. industry statements regarding historical repair times, TC felt that by assigning a category B it would ensure that all operators would make these repairs in a timely fashion. This was considered a reasonable compromise to removing the relief entirely in accordance with the arguments made above.

This Global Change reflects the category change which was approved at Revision 4 of the Guidance Book, 31 Mar 98.

W.R. Jupp
Acting Chief
Aircraft Certification, Flight Test
for Minister of Transport

98 04 22
TCGC-3 (Original) 1/1

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Global Change 2 

Transport Canada Master Minimum Equipment List (MMEL) Guidance Book Items

23.3 Cabin Service Interphone System (Flight Deck/Cabin and Cabin/Cabin)
23.10 Passenger Address System
26.8 Lavatory Fire Extinguisher Systems
26.9 Lavatory Smoke Detections Systems
33.2 Emergency Lighting, External
33.9 No Smoking/Fasten Seat Belt/Return to Cabin Lights,

specifically, the category A non-passenger carrying operations relief, are designated Transport Canada Global Change 2 (TCGC-2)

This GC is an approved addendum to all affected existing MMELs.  An operator may seek use of the specific relief by revising the affected Minimum Equipment List (MEL).  In doing so, the non-passenger carrying operations proviso in the Guidance Book (GB), where applicable should be copied verbatim into the MEL;  some wording changes may be required to cater to a particular aircraft configuration.  Approval of the revised MEL shall be gained using normal procedures or as otherwise directed in the new MMEL Item.

SUBJECT: CABIN SAFETY RELATED ITEMS IN NON-PASSENGER CARRYING OPERATIONS

Discussion:

At Revision 3 of the Transport Canada Master Minimum Equipment List (MMEL) Guidance Book (GB) dated 27 Mar 97 several cabin safety related items were revised to permit relief from non-passenger carrying operations.  This relief is intended to permit the movement of an aircraft to a maintenance facility with some additional safety equipment inoperative for a short period of time which would otherwise not be permitted with passengers on board.  The relief is permitted based on the fact that crew members are trained and familiar with the aircraft.

OSB

L. Farrell
Acting Chief
Aircraft Certification, Flight Test
for Minister of Tranport
97.10.09
TCGC-2(Original) 1/1

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Global Change 1

Revision 1

Transport Canada Master Minimum Equipment List (MMEL) Guidance Book Item 52.2 EMERGENCY EXITS AND ESCAPE SLIDES (PASSENGER CARRYING OPERATIONS) is designated Global Change 1 (GC-1).

This GC is an approved addendum to all affected existing MMELs.  An operator may seek use of the specific relief by revising the affected Minimum Equipment List (MEL).  In doing so, the provisos in the Guidance Book (GB), where applicable should be copied verbatim into the MEL;  some wording changed may be required to cater to a particular aircraft configuration.  Approval of the revised MEL shall be gained using normal procedures or as otherwise directed in the new MMEL Item.

SUBJECT: EMERGENCY EXITS AND ESCAPE SLIDES (PASSENGER CARRYING OPERATIONS)

Discussion:

Since the early 1970s TC has permitted Door/Slide relief for four aircraft - B747, DC-10, L-1011 and A-300.  This is consistent with the FAA (except for the A300) but more restrictive that JAA countries which permit relief on additional aircraft.  Canadian operators have therefore persisted in their efforts to achieve more relief in order to have the same economic advantages as their European competitors.

Rather than dealing only with the effect (economic and safety) of inoperative emergency exits and escape slides, Transport Canada has taken a longer term view and decided to approach the problem on the basis of correcting the cause.

Policy:

Following extensive discussions within Transport Canada and with Industry, Transport Canada, Airworthiness has established the following policy:

a) relief will be granted to all wide body and some larger narrow bodied transport category aircraft.
b) the conditions under which this short term relief will be granted are detailed in the TC MMEL Guidance Book Item 52.2 EMERGENCY EXITS AND ESCAPE SLIDES (PASSENGER CARRYING OPERATIONS).
c) this short term relief is permitted to allow operators and manufacturers to identify and correct the problems which are causing these safety critical systems to be unavailable.
d) the details surrounding use of this relief will be recorded, and this information will allow Transport Canada to closely track the problems being experienced and to monitor progress on their resolution.
e) all MMEL/MEL relief for doors, emergency exits and escape slides must be monitored and reviewed by Transport Canada and industry over the next two years with the aim of reconsidering TC's stated position to withdraw all relief on August 1, 1996.

OSB

K.J. Mansfield
Chief
Airworthiness Flight Test
for Director, Airworthiness
Transport Canada
TCGC-1 (Rev. 1) 1/1