ENVIRONMENTAL QUALIFICATION FORM
Description:
Switch Panel
Document No.:
802\521-0
NAT Part No.:
802-xxx
TSO Authorization:
TSO-C50c
Manufacturer’s Specification and/or Other Applicable Specification:
RTCA DO-160C
Manufacturer:
Wulfsberg Electronics Division
Address:
6400 Wilkinson Drive, Prescott, AZ 86301-6164, USA
Prepared By:
Checked By:
Approved By:
Rev: 1.01
Jul 16, 2010
Page 1 of 2
ENG-FORM: 521-0102.DOT
CONFIDENTIAL AND PROPRIETARY TO NORTHERN AIRBORNE TECHNOLOGY LTD.
CONDITIONS
DO-160C
SECTION/
PARAGRAPH
DESCRIPTION OF CONDUCTED TESTS
Temperature and altitude
4.0
Equipment tested to Category [(A2)(F2)-],
except as noted.
Low temperature
High temperature
4.5.1
4.5.2
4.5.3
-55°C (operating and ground survival)
+85°C (ground survival)
+70°C (short time operating)
+70°C (operating)
In-flight loss of cooling
4.5.4
N/A. No forced air cooling.
Altitude 4.6.1
+70,000
ft.
Decompression
4.6.2
8,000 ft to +70,000 ft.
Overpressure 4.6.3
-15,000
ft
Temperature variation
5.0
Equipment tested to Category B.
Humidity
6.0
Equipment tested to Category A.
Operational shocks and
Crash safety
Operational shocks
Crash safety
7.0
7.2
7.3
Equipment tested without shock mounts per
DO-160C, paragraphs 7.2.1, 7.3.1, 7.3.2, and
7.3.2.2.
Vibration 8.0
Equipment
tested without shock mounts to
Category L, except extended curve 150-
2,000 Hz 3g pk. No change in critical
frequencies during test. Equipment tested
without shock mounts to Category C.
Change in critical frequency in Z-axis from
150.2 Hz to 118.1 Hz.
Explosion proofness
9.0
Equipment identified as Category X, no test
performed.
Waterproofness 10.0
Equipment
identified as Category X, no test
performed.
Fluids susceptibility
11.0
Equipment identified as Category X, no test
performed.
Sand and dust
12.0
Equipment identified as Category X, no test
performed.
