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Federal Aviation Administration
Washington, DC

MMEL Policy Letter 120, Revision 2

Date:                                        12/04/2017

To:                                           Manager, Aircraft Evaluation Division (AFS-100)
   All Aircraft Evaluation Group Managers

From:                                      Manager, Air Transportation Division (AFS-200)

Reply to Attn of:                     Manager, New Program Implementation Branch (AFS-240)

MMEL GLOBAL CHANGE

This Global Change (GC) is an approved addendum to all existing MMEL documents. Operators may seek use of the specific relief contained in this policy letter by revising their Minimum Equipment List (MEL). In doing so, each applicable sample proviso stating the relief in this policy letter must be copied verbatim in the operator’s MEL. Approval of a revised MEL is gained utilizing established procedures, through the operator’s assigned Principal Operations Inspector (POI). This GC expires 12/04/2021.

SUBJECT:                      Emergency Locator Transmitters (ELT)

MMEL CODE:                       23 (COMMUNICATIONS) and 25 (EQUIPMENT/FURNISHINGS)

REFERENCE:                        PL-120, Revision 1, dated January 20, 2009

                                                PL-120, Original, dated January 01, 2007

                                                14 CFR part 91, 91.207(f)(10)

PURPOSE:

The purpose of this Policy Letter is to provide standardized MMEL requirements for the Emergency Locator Transmitters (ELT).

DISCUSSION:

Revision 2: Adds Category D relief for an installed Remote ELT Switch. An inoperative Remote ELT Switch has no effect on ELT operation provided the ELT Remote Switch is deactivated and the ELT switch is placed in the ARMED mode. Revision 2 also adds Category D relief for an ELT Indicator Light and an ELT Aural Alarm, both of which, if inoperative, have no effect on ELT operation.

Revision 1: Added ATA code assignment ATA 23 and the requirement that an inoperative system that remains installed must be deactivated. For Fixed ELTs, split items into two parts, those that are inoperative and those that are missing.

Adds relief for Emergency Locator Transmitters (ELT). After review by the Flight Operations Policy Board, a determination was made that MMEL policy for ELTs was necessary in order to clarify the relief provided in 14 CFR part 91, 91.207(f)(10).

POLICY:

The following policy has been established for ELTs in order to provide operators with ready access to the dispatch relief allowed by 14 CFR.

For Fixed ELTs required by 14 CFR, Category A repair interval is assigned with repairs to be made within 90 days after the ELT is found to be missing or temporarily removed for inspection, repair, modification, or replacement.

For ELTs in excess of those required by 14 CFR (Fixed or Survival Type), Category D repair interval is assigned.

MMEL TABLE KEY
SYSTEM & SEQUENCE NO.
ITEM
1. REPAIR CATEGORY
2. NUMBER INSTALLED
3. NUMBER REQUIRED FOR DISPATCH
4. REMARKS OR EXCEPTIONS

23. COMMUNICATIONS

      or

25. EQUIPMENT/FURNISHINGS

 

Sequence No.

Item

1

2

3

4

Change Bar

25-XX

Emergency Locator Transmitter (ELT)

 

 

 

 

 

***

Survival Type ELTs

D

-

-

Any in excess of those required by 14 CFR may be inoperative or missing.

 

***

Fixed ELTs

A

-

0

(M) May be inoperative provided:

a)   System is deactivated,

b)   Repairs are made within 90 days, and

c)   Placard stating “ELT not installed” is placed in view of the pilot.

 

 

 

A

-

0

May be missing provided:

a)   Repairs are made within 90 days, and

b)   Placard stating “ELT not installed” is placed in view of the pilot.

 

 

 

D

-

-

(M) May be inoperative provided:

a)   Any in excess of those required by 14 CFR may be inoperative provided system is deactivated, and

b)   Placard stating “ELT not installed” is placed in view of the pilot.

 

 

 

D

-

-

May be missing provided:

a)   Any in excess of those required by 14 CFR may be missing, and

b)   Placard stating “ELT not installed” is placed in view of the pilot.

 

***

Remote ELT Switch

D

-

0

(M) May be inoperative provided:

a)   Remote ELT Switch is deactivated, and

b)   ELT Switch is placed in the ARMED mode.

 

***

ELT Indicator Light

D

-

0

 

 

***

ELT Aural Alarm

D

-

0

 

 

Each Flight Operations Evaluation Board (FOEB) Chair should review the specific aircraft configuration(s) and apply this policy to affected MMELs through the normal FOEB process.

ORIGINAL SIGNED by

/s/ Stephen C. Moates for

Manager, Air Transportation Division