Structural Repair Manual (SRM)
Manual issued by the Original Equipment Manufacturer of an aircraft outlining Structural Repair Limitations and Repair details.
Sub-Contracting See Outsourcing.

Substantial Damage
Damage or structural failure that negatively affects the structural strength, performance, or flying characteristics of an aircraft, and which would require significant repair or replacement of the affected component or system. Damage to landing gear, wheels, tires, and flaps is excluded, as well as bent aerodynamic fairings, dents in the aircraft skin, small punctures in the aircraft skin, ground damage to propeller blades, or damage to only a single engine.

Supernumeraries
Persons, in addition to the flight crew, that are not passengers but are on board an all-cargo aircraft because they either:
ƒ are necessary for the safety of operations, or
ƒ have a relationship with the operator (e.g. employee, employee family members), or
ƒ have certain knowledge and abilities gained through selection and mandatory training (e.g. non-operating crew members).
Supernumeraries may also be utilised in the cabin of passenger aircraft to conduct certain service activities (e.g. serving beverages, conducting customer relations, selling tickets); such persons are not assigned to perform safety duties.

Supervised Operating Experience (SOE)
Crew member operating experience on a specific aircraft type that is required in conjunction with flight or cabin crew member qualification training and evaluation. SOE is a form of line training conducted under the supervision of a current and qualified flight or cabin crew member authorised for the purpose by the Operator and/or State.
Equivalent Terms: Initial Operating Experience (IOE), Operating Experience (OE), Supervised Operating Experience (SOE), Transoceanic Operating Experience (TOE)
See Line Training

Supplemental Type Certificate (STC) Holder