Signature/Sign
When a person signs a maintenance document for having performed work which is to be subsequently certified by a licensed or appropriately licensed aircraft maintenance engineer or a person specifically approved or authorised by the applicable authority, then sign means the person's normal signed name and staff number is to be shown in the applicable column or space provided on the document.
Refer to Certification for the use of a signature for the purpose of certification. Equivalent Terms: Certification

Simultaneous Maintenance
In relation to ER/ETOPS/LROPS, maintenance performed on like systems (i.e. magnetic chip detectors, engines) by the same person.
Simulator
See Flight Simulator Smoke Barrier
A structure or other material installed on an aircraft between the cargo and the flight crew, passengers and/or supernumeraries for the purpose of protecting such personnel from smoke that might emanate from the cargo.

Special Airports
Airports designated by an operator or state that, due to factors such as surrounding terrain, obstructions, or complex approach or departure procedures, require special flight crew qualifications.

Special Purpose Operational Training (SPOT)
A simulator training session under Line Operational Simulation (LOS) designed to address specific training objectives based on technical and CRM requirements. A SPOT scenario may consist of full or partial flight segments depending on the training objectives for the flight.
See Line Operational Simulation (LOS) Standard Callout
A required uniform verbal statement made by crew members during operations that identifies conditions, actions, instrument settings, switch positions, visual sightings or other operational items specified by procedure.

Standard Part
Is a part manufactured in complete compliance with an established Government or industry-accepted specification, which includes design, manufacturing, and uniform identification requirements. The specification must include all information necessary to produce and confirm the part. The specification must be published so that any party may manufacture the part. Examples include, but are not limited to: