- Structural deflections that interfere with materiel operation.
- Permanent deformation, structural cracks, and fractures that disable or destroy materiel.
- Broken fasteners and supports that result in loose parts within materiel.
- Broken mounting hardware that results in loose materiel within a platform.
- Electronic circuit boards that short out and circuits that open up.
- Inductances and capacitances that change value.
- Relays that open or close.
- Actuators and other mechanisms that bind.
- Seals that leak.
- Pressure and flow regulators that change value.
- Pumps that cavitate.
- Spools in servo valves that are displaced causing erratic and dangerous control system response.
Section 2 provides formulas for determining g-loads for fighter aircraft because of the high roll and pitch rates and tables of suggested g-loads for other platforms such as helicopters, manned aerospace vehicles, ground-launched missiles, etc. There is also a table of suggested g-loads for the Crash Hazard Acceleration test which goes up as high as 40-g. Required apparatus for testing consists of either a centrifuge of adequate size or a rocket-powered sled. This Method provides for three procedures:
- Procedure I – Structural Test The item under test is subjected to the specified g-level while not operating. After the test, test the item for proper operation.
- Procedure II – Operational Test The item under test is turned on and operating normally while subjected to the g-load.
- Procedure III – Crash Hazard Acceleration Test Very high non-operational g-loads are imparted to assure the item under test does not become a hazard during a crash. Items, such as aircrew seats, are tested to ensure they remain attached to the aircraft structure during a crash.