Tool Calibration Standards

Which 14 CFR regulation demands all repair station’s equipment to be calibrated and maintained?

14 CFR 145.109(C)

What must calibration follow?

• Manufacturer specs

• Approved methods, referencing NIST traceability

What does Order 8300.10 volume 2, chapter 162 - repair station inspections cover?

How FAA inspectors assess a repair station’s tools and test equipment calibration program

In an inspector checklist, what must calibration intervals be?

Clearly defined

In an inspector checklist, what must each item have regarding the NIST?

Traceability to NIST or equivalent national standard

What does AC 43-9C have to do with recording tool calibration data?

Reinforces the importance of it

Which AC covers guide for developing and evaluation repair station and quality control manuals?

AC 145-9

What does AC 145-9 provide guidance for?

Developing calibration programs in repair station quality manuals

What is the acronym for repair station quality manuals?

QCMs

What must QCMs include?

• Calibration schedule

• Method of traceability to NIST

• Handling of non-compliant or OOT tools

• Labeling of calibrated equipment with current calibration status and due date

What does OOT stand for?

Out-of-tolerance

What does NIST stand for?

Nation Institute of Standards and Technology

Why does the FAA require calibration standards traceable to NIST? (3)

Ensure that calibration is:

• Reliable

• Repeatable

• Internationally recognized

What does traceability mean regarding to NIST?

An unbroken chain of comparisons between the test equipment and a national standard

What must calibration labs used by repair station provide?

Certificates showing traceability