Commonwealth legislation

AD/ELECT/66 Amdt 1 - Bendix Magneto Coils and Rotating Magnets

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

6/10 complexity

This Airworthiness Directive requires inspection and, if necessary, replacement of specified Bendix ignition coils and rotating magnets on certain S-20, S-200, S-600 and S-1200 magnetos, following TCM Ignition Systems Mandatory Service Bulletin MSB644 (4 April 1994). CASA states the measure removes older coil and magnet designs; affected aircraft owners/operators must carry out the work within 100 hours time-in-service after 10 November 1994 and bear the inspection and replacement costs. Applicability depends on magneto model, serial number and data-plate markings, which can complicate identification.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/ELECT/66 Amdt 1 - Bendix Magneto Coils and Rotating Magnets.

AD/ELECT/66 Amdt 1 - Bendix Magneto Coils and Rotating Magnets

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
Electrical Equipment

AD/ELECT/66

Amdt 1

Bendix Magneto Coils and Rotating Magnets 10/95

Applicability: Teledyne Continental Motors (TCM) Ignition Systems (formerly Bendix) magnetos as listed below. Magnetos manufactured by Bendix in Jacksonville FL and those manufactured by TCM in Atlanta GA (as indicated on the data plate) are excluded.

S-20, S-200 and S-600 series magnetos with either serial numbers below 2000000 without any letter prefix or with serial numbers below 16058 having the letter `A” prefix (for example A16057).

S-20, S-200 and S-600 series magnetos with data plates marked

`REMANUFACTURED” and with serial numbers below 901001.

S-1200 series magnetos with either serial numbers below 2000000 without any letter prefix or with serial numbers below 132844 having the letter `A” prefix.

S-1200 series magnetos with data plates marked `REMANUFACTURED” and with serial numbers below 901001.

Note 1: CASA has received reports of some confusion as to what is meant by S-20, S- 200, S-600 and S-1200. A typical example is S6RN-25, where the `S” designates a single type ignition unit, the `6” designates the number of engine cylinders, the `R” designates right hand rotation, the `N” is the manufacturer designator (this did not change when TCM purchased the Bendix magneto product line) and the number after the dash indicates the series (a -25 is a S-20 series magneto, while a -1225 is a S- 1200 series magneto.

Note 2: If a Bendix magneto data plate has been replaced with an overhaul facility's data plate, this Directive is still applicable to that magneto as the magneto is a Bendix magneto.

Note 3: Yellow Bendix or TCM service spare data plates may have been installed during field overhaul, use the magneto model and serial number to determine the applicability of this Directive.

Note 4: The paint on some early data plates may have been obliterated and the data plate may appear silver in colour, use the magneto model and serial number to determine the applicability of this Directive.

Requirement: For Bendix S-20 and S-200 series magnetos, inspect and if necessary, replace Bendix ignition coils and rotating magnets identified in the Detailed Instructions of TCM Ignition Systems Mandatory Service Bulletin MSB644 dated 4 April 1994 with appropriate serviceable ignition coils and rotating magnets.

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

For the Bendix S-600 series magnetos, inspect and if necessary, replace Bendix rotating magnets identified in the Detailed Instructions of TCM Ignition Systems Mandatory Service Bulletin MSB644 dated 4 April 1994 with appropriate serviceable rotating magnets. (Ignition coils of the S-600 series magnetos already incorporate the improved design.)

For the Bendix S-1200 series magnetos, inspect and if necessary, replace Bendix ignition coils identified in the Detailed Instructions of TCM Ignition Systems Mandatory Service Bulletin MSB644 dated 4 April 1994 with appropriate serviceable ignition coils. (The rotating magnets of the S-1200 series magnetos already incorporate the improved design.)

Note: Previous compliance with AD/ELECT/53 Amdt 2 or earlier issues of that Directive does not constitute full compliance with this Directive, similarly compliance with Bendix Electrical Components Division Service Bulletin 560 or 560A would not constitute full compliance.

Compliance: The original compliance remains unchanged as within the next 100 hours time in service after 10 November 1994. This amendment is effective from 14 September 1995.

Note: FAA AD 94-01-03 R2 Amdt 39-9271 refers.

Background: The original issue of this Directive superseded AD/ELECT/53 Amdt 2, which was cancelled. Reports are still being received of `clear case coils” being identified during magneto servicing, compliance with this Directive, whilst ensuring that all coils of this type are finally removed from Australian aircraft, will also ensure that older style rotating magnets are removed.

This amendment is issued to clarify the applicability statement and reflects the issue of a revision to the FAA Airworthiness Directive, no further action is required if magnetos are in compliance with the original issue of this Directive.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/ELECT/66 Amdt 1 - Bendix Magneto Coils and Rotating Magnets

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Electrical Equipment

AD/ELECT/66

Amdt 1

Bendix Magneto Coils and Rotating Magnets 10/95

S-20, S-200 and S-600 series magnetos with either serial numbers below 2000000 without any letter prefix or with serial numbers below 16058 having the letter `A” prefix (for example A16057).

S-20, S-200 and S-600 series magnetos with data plates marked

`REMANUFACTURED” and with serial numbers below 901001.

S-1200 series magnetos with either serial numbers below 2000000 without any letter prefix or with serial numbers below 132844 having the letter `A” prefix.

S-1200 series magnetos with data plates marked `REMANUFACTURED” and with serial numbers below 901001.

Note 2: If a Bendix magneto data plate has been replaced with an overhaul facility's data plate, this Directive is still applicable to that magneto as the magneto is a Bendix magneto.

Note 3: Yellow Bendix or TCM service spare data plates may have been installed during field overhaul, use the magneto model and serial number to determine the applicability of this Directive.