Northern Airborne Technology 250 - Manual (Page 23)

EQUIPMENT MANUAL 250-16-1
250/250-16-1 Page 14
Table 2. Environmental Qualification Form
NOMENCLATURE: Passenger Speaker Amplifier
TYPE/MODEL/PART NO.: Model 250-[ ] TSO NUMBER: TSO-C50c
MANUFACTURER'S SPECIFICATION AND/OR OTHER APPLICABLE SPECIFICATION: dB Systems
Document
No. 250-16-1, Equipment Manual
MANUFACTURER: dB Systems, Inc.
ADDRESS: 2847 152nd Ave. N.E., Redmond, WA 98052
Conditions DO-160C
Section/
Paragraph
Description of Conducted Tests
Temperature and altitude
Low temperature
High temperature
In-flight loss of cooling
Altitude
Decompression
Overpressure 4.0
4.5.1
4.5.2
4.5.3
4.5.4
4.6.1
4.6.2
4.6.3
Equipment tested to Category F2.
(see also temperature variation)
(see also temperature variation)
(see also temperature variation)
Equipment does not require special cooling.
Equipment tested at +70,000 feet.
Equipment tested to Category A2, except
decompressed to +55,000 feet.
Equipment tested to Category A2.
Temperature variation 5.0 Equipment tested to Category B; combined
with 4.5.1, 4.5.2, & 4.5.3.
Humidity 6.0 Equipment tested to category A requirements.
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, &
7.3.2.2.
Vibration 8.0 Equipment tested without shock mounts to
Category L, except extended curve 150-2,000
Hz 3g pk. Equipment tested without shock
mounts to Category C. No change in critical
frequencies during tests.
Explosion proofness 9.0 Equipment identified as Category X, no test
required.
Waterproofness 10.0 Equipment identified as Category X, no test
required.
Fluids susceptibility 11.0 Equipment identified as Category X, no test
required.