A Part 121 certificate holder is developing a program for ground deicing and anti-icing. Under 14 CFR 121.629(c), which of the following is a mandatory element of an approved ground deicing/anti-icing program?
- AProcedures for applying anti-icing fluids with no holdover time determination.
- BProcedures for the application of deicing fluids only.
- CA system for ensuring that the aircraft is clean of contaminants, including procedures for checking and reapplying anti-icing fluids.
- DProcedures for visual inspection of critical surfaces prior to engine start.
Show answer & explanationAnswer & explanation
Correct answer: C. A system for ensuring that the aircraft is clean of contaminants, including procedures for checking and reapplying anti-icing fluids.
14 CFR 121.629(c) requires that a certificate holder's approved ground deicing/anti-icing program include a system for ensuring that the aircraft is clean of contaminants, including procedures for checking and reapplying anti-icing fluids. This encompasses both deicing and anti-icing aspects, and ensures the aircraft is safe for takeoff.
Why the other options are wrong
- A. Holdover times are a critical component of anti-icing procedures and cannot be excluded.
- B. This is too narrow; the program must cover both deicing and anti-icing, and other elements.
- D. While visual inspections are part of the process, the regulation specifies a broader 'system for ensuring the aircraft is clean of contaminants' and includes reapplication procedures.
Ground Deicing/Anti-Icing Program (121.629(c))
Mandates an FAA-approved program for Part 121 operators to ensure aircraft are free of ice, snow, and other contaminants before takeoff, including procedures for fluid application and holdover times.
- Required for operations in ground icing conditions.
- Must include procedures for clean aircraft concept.
- Holdover times are a critical component.
Memory trick: Deicing Program: 'D' for Deicing, 'A' for Anti-icing, 'P' for Procedures. 'Clean' and 'Reapply' are the core concepts.