Commonwealth legislation

AD/CESSNA 206/26 - Ammeter Type and Position

RepealedCTH

This Act has been repealed and is no longer in force. It is retained for historical reference.

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

2/10 complexity

This directive corrects a wiring fault in Cessna 206 aircraft where a centre-zero ammeter may be tied to the alternator instead of the battery, giving falsely neutral readings while the battery is discharging. Owners/operators must inspect and, if needed, rewire the ammeter to the battery line per Cessna diagrams. A simple power-on landing-light test can reveal the fault. Compliance required within 100 flight hours after 30 September 1978.

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AD/CESSNA 206/26 - Ammeter Type and Position

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Cessna 206 Series Aeroplanes

AD/CESSNA 206/26 Ammeter Type and Position 9/78

Applicability: All models.

Requirement: 1. Inspect aircraft to ascertain if the ammeter has been modified in accordance with Rex Drawing RA-A-1109 or if a centre zero ammeter (charge/discharge type) is connected in the alternator line.

2. Reconnect centre zero ammeter (charge/discharge type) into the battery line in accordance with original Cessna wiring diagrams.

Note: This requirement can be quickly checked by switching on the battery master switch (alternator not running) and a load such as a landing light switch and noting the following:

if ammeter reads below zero in the discharge sector then it is connected in the battery line.

b. if the ammeter still reads zero when a load is applied it is quite possibly connected in the alternator line and needs to be reconnected into the battery line.

Compliance: Within the next 100 hours time in service after 30 September 1978.

Source text

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

1 AD/CESSNA 206/26 - Ammeter Type and Position