PWS.pdf

18 Apr 19

Performance Work Statement

Additional Testing Requirement

C-17 Engine Fire Extinguisher- Ametek PN M472555-2, NSN 1680-01-586-4187JY

1.0 This statement of work describes additional testing required by USAF on Ametek PN M472555-2 to address deficiencies in qualification testing, not performed or requested during SAR (Source Approval Request), nor addressed during First Article Testing. USAF to provide 3 each PN M472555-2 for testing. Any additional material needed to perform testing shall be provided by the contractor. Order of testing shall be defined by the contractor.

2.0 Applicable Documents

Government Documents

MIL-C-22284A Container, Aircraft Fire Extinguishing System, Bromotrifluoromethane

MIL-HDBK-472 Maintainability Prediction

MIL-STD-810C Environmental Test Methods

MIL-STD-810D Environmental Test Methods

Contractor Documents

17B6D2100, Rev C, Douglas Aircraft (CAGE 88277)

3.0 Perform the following testing qualification tests using any method:

3.1 Perform mounting lug test in per MIL-C-22284A, paragraph 4.6.4.

3.2 Leakage. Perform leak testing on 3 each PN M472555-2, per paragraph 4.6.2 of MIL-C-22284A or the assembly shall be heated to a temperature of 109 (+5) °F. While at this temperature, the container shall be tested for leakage with a halide lamp set at the maximum sensitivity level, or by an equivalent instrument.

3.3 Rechargeability. Charge, discharge, and recharge (1) each PN M472555-2 with nitrogen to 800 PSIG at 70 ˚F, 10 times to demonstrate verification of 17B6D2100, Rev C, paragraph 3.2.1.4. Result: After 10 cycles PN

M472555-2 still maintains pressure with no discernable leakage.

3.4 Design Life. Provide a written analysis suggesting it would be logical to assume 17B6D2100, Rev C, paragraph

3.2.1.5 has been met. Result: A logical written analysis.

3.5 Discharge Rate Test. Perform on (1) each PN M472555-2, testing per 17B6D2100, Rev C, paragraph 3.2.1.6.

Result: Provide graph showing change in mass to demonstrate 95% discharge in 0.9 seconds.

3.6 Gunfire Requirement: Perform gunfire testing per MIL-C-22284, paragraph 4.6.10. Result: The container shall remain in one piece. (2 each PN M472555-2 destroyed in this test)

3.7 Verify dimensional limitations, mounting, and weight of the units provided (17B6D2100, Rev C, paragraph

3.2.2). Result: A table listing this information.

3.8 Maintainability: Provide information from RAC showing similar fire extinguisher maintainability prediction.

See 17B6D2100, Rev C, paragraph 3.2.4. Result: Demonstrate compliance.

3.9 Environmental Testing.

3.9.1 Temperature. Perform testing per 17B6D2100, Rev C, paragraph 3.2.5.1 Result: Demonstrate compliance.

3.9.2 Altitude. Perform on (1) each PN M472555-2, testing per 17B6D2100, Rev C, paragraph 3.2.5.2.

Result: Provide graph showing change in mass to demonstrate 95% discharge in 0.9 seconds at altitude of 50,000 feet pressure equivalent.

18 Apr 19

3.9.3 Humidity. Perform on (1) each PN M472555-2, testing per 17B6D2100, Rev C, paragraph

3.2.5.3. Result: Provide results indicating requirement was met.

3.9.4 Fungus Resistance. Perform on (1) each PN M472555-2, testing per 17B6D2100, Rev C, paragraph 3.2.5.4. Result: Provide results indicating requirement was met.

3.9.5 Salt Fog. Perform on (1) each PN M472555-2, testing per 17B6D2100, Rev C, paragraph 3.2.5.5.

Result: Provide results indicating requirement was met.

3.9.6 Sand and Dust. Perform on (1) each PN M472555-2, testing per 17B6D2100, Rev C, paragraph

3.2.5.6. Result: Provide results indicating requirement was met.

3.9.7 Shock. Perform shock testing per 17B6D2100, Rev C, paragraph 3.2.5.7. Result: Demonstrate compliance.

3.9.8 Random Vibration. Perform random vibration testing per 17B6D2100, Rev C, paragraph 3.2.5.8.

Result: Demonstrate compliance.

3.9.9 “G” Load Testing. Perform “G” load testing per 17B6D2100, Rev C, paragraph 3.2.5.9. Result:

Demonstrate compliance.

3.10 Provide the product or military specification utilized in paragraph 3.3.3.5.1 for potting. Was it MIL-S-

8516?

3.11 Confirm equivalence/interchangeability of MS3459W10SL-3S and MS3459-10SL-3S connectors.

3.12 Allow use of Component Maintenance Manual for PN M472555-2 for source data to create a technical order for PN M472555-2.

4.0 Results and Documentation/Deliverable.

4.1 Document test result for paragraph 3.1.

4.2 For performance of paragraph 3.2 document there is no detectable leakage or leakage shall not exceed 6.10

X 10-9 in3/sec.

4.3 Document after performing paragraph 3.3 that after 10 cycles PN M472555-2 still maintains pressure with no discernable leakage.

4.4 Perform/provide a logical written analysis of design life projection given paragraph 3.4.

4.5 Provide the result from performing paragraph 3.5. Provide graph showing change in mass to demonstrate

95% discharge in 0.9 seconds.

4.6 Perform paragraph 3.6. Document number of pieces after test.

4.7 Perform paragraph 3.7. Provide table of results.

4.8 Demonstrate compliance with paragraph 3.8.

4.9 Demonstrate compliance with paragraph 3.9.

4.10 Determine conformance to paragraph 3.10.

4.11 Determine conformance to paragraph 3.11.

4.12 Determine conformance to paragraph 3.12.

4.13 Provide a report in contractor format summarizing all information gathered, provided in electronic PDF format, organized in a clear and logical manor, indexed. (DI-QCIC-81536A)

5.0 Packaging. N/A

6.0 Notes.

6.1 Government furnished material. Three (3) each PN M472555-2, NSN 1680-01-586-4187JY will be supplied by USAF for testing. These assets are not to be returned upon completion of testing.