CAA NZ AME Electrical case studies
CAA NZ AME Electrical · Put your knowledge to work in context.
The CAA NZ Aircraft Maintenance Engineer Licence (Electrical), often called the NZ Part 66 AME Licence - Electrical, is a New Zealand civil aviation maintenance certification administered by the Civil Aviation Authority of New Zealand (CAA). It is aimed at engineers who inspect, maintain, and certify electrical work on aircraft, and it sits within the CAA's engineering licensing framework alongside maintenance engineer licensing, Part 66 AME licence syllabuses, recognition of foreign AME licences, and type ratings for AMEL holders. The CAA NZ AME Electrical case studies are 5 cases and about 2,965 words.
1Voltage Drop on a 28 V DC Feeder
During a scheduled inspection of a Part 23 twin-engine aeroplane, you measure the 28 V DC feeder to a 15 A continuous cabin cooling fan. The feeder is 6 m of 2.5 mm² copper cable, routed in a conduit at an ambient temperature of 55 °C, protected by a 20 A thermal circuit breaker.
626 words, about 3 min2Intermittent Overvoltage on a 24 V Alternator System
On a turbine-powered agricultural aircraft with a 24 V DC system, the 70 A alternator has an external voltage regulator and a separate overvoltage (OV) relay that trips at 32.0 ± 0.5 V. The pilot reports ammeter flicker and an intermittent OV warning during high-load spray runs at 1800 RPM, but no warning on the ground.
615 words, about 3 min3Generator Will Not Parallel After Engine Start
After the left engine start on a twin-turboprop with a 115 V AC 400 Hz parallel bus system, the left generator line contactor (GLC) does not close. The right 30 kVA generator picks up both main buses through the closed bus tie and indicates 85% load.
607 words, about 3 min4Bonding Resistance After Repainting a Fuel Tank Access Panel
After repainting a metallic wing access panel that covers a fuel tank, you measure bonding resistance between the panel and the adjacent wing skin. The panel was removed for tank access, reinstalled with new screws, and the external surface repainted.
545 words, about 3 min5Untraceable Terminal and Pressure to Release
At 23:30 on a Friday, you are completing a 100-hour inspection on a 19-seat turboprop. A generator feeder terminal overheated and you have crimped a replacement terminal of the correct part number, but the terminal came from an unmarked bin with no supplier invoice, certificate of conformity, or authorized release certificate.
572 words, about 3 min