Inspection and Maintenance - Decreasing Fuel Consumption and Exhaust Gas Emissions in Transportation - page 193

Table 13.4 Main elements and tasks involved in an aircraft inspection
Main elements Involved tasks and work methods

Lubrication
Service

Lubricate nose landing gear retract actuator
Check APU oil level and add oil as required

Operational check Check voice recorder

Functional check Check cargo overheat temperature switch

General visual
inspection

Inspect pneumatic nose assembly of off-wing escape slide

Detailed inspection Inspect check valve flapper and hinge pin of equipment cooling supply fan

Visual check Observation to determine items not fulfilling their intended purpose

(non-quantitative tolerances)

Special detailed
inspection

Inspect the combustion chamber

Restore Clean cabin pressure outflow valve gates and seals

Discard Replace air-prefilters for recirculation

13.2 Inspection and Maintenance in Aviation

Inspection and maintenance measures may include ensuring compliance with
Airworthiness Directives (AD) or Service Bulletins (SB). Increased fuel con-
sumption is often the initiator of an inspection and maintenance measure

[ 21 , 22 ].

13.2.1 Inspection of Airplanes

An airline must not operate unless it is controlled and released to service by an
approved maintenance organization, i.e., JAR—145 or EASA Part—145 applies.
Aircraft inspection leads to maintenance with overhaul, repair or modification of
the aircraft or the aircraft's components [ 23 ]. The inspection checks all compo-
nents of an aircraft or aircraft sub-assembly, but does not include:

• Elementary work, such as removing and replacing tires, inspection plates, spark
plugs, checking the cylinder compression;
• Servicing, such as refueling and washing windows; and
• Any work done on an aircraft or aircraft component as part of the manufacturing
process, prior to the issue of the certificate of airworthiness or other certification
documents (see Table 13.4 )[ 24 ].