BR-ANAC-CMS case studies
BR-ANAC-CMS · Put your knowledge to work in context.
The ANAC Continuing Maintenance Schedule (CMS) is a Brazilian civil aviation knowledge assessment tied to continuing airworthiness and maintenance training under ANAC oversight. It is intended for licensed maintenance personnel, maintenance organisation staff, and candidates preparing to work within Brazil's regulated maintenance environment, including those converting or validating foreign credentials. The BR-ANAC-CMS case studies are 5 cases and about 3,087 words.
1Deferred Defect Versus Airworthiness Directive Deadline
A regional operator's twin turboprop is at a line station with 36 hours remaining before its next scheduled overnight check. During turnaround inspection a mechanic finds the left engine fire-detection loop showing a continuous fault on the BITE panel.
727 words, about 4 min2Shift Handover on a Pressurized Fuselage Repair
A heavy maintenance visit on a narrowbody is in its fourth week. A repair to a fuselage skin lap joint has been designed by the operator's structures engineer and approved as a major repair.
652 words, about 3 min3Interval Escalation on a Corrosion-Prone Airframe
An operator's maintenance program sets a repetitive inspection for wing spar lower-cap corrosion at 4,000 flight hours, with a permitted escalation of up to 10 percent under the program's reliability provisions. The fleet has 12 aircraft.
580 words, about 3 min4Borescope Finding and Troubleshooting Discipline
During a routine borescope inspection of a turbofan engine's high-pressure turbine, a technician observes blade tip distress on three blades: minor material loss at the tip shroud, no cracking visible, and no evidence of overheating on adjacent vanes. The engine has 1,200 cycles since its last shop visit and is within its on-wing inspection interval.
553 words, about 3 min5Return to Service After an Unapproved Alteration
A maintenance facility installs a cabin reconfiguration on a business jet: new seat tracks, relocated cabinetry, and a revised electrical load for galley equipment. The facility holds an airframe rating but not a design approval.
575 words, about 3 min