Instruction Manual
Installation & Operation
Model FA2100 CVR
Jan. 01/03
Rev. 07
Page B–27
165E1846–00
Environmental Qualification Form (EQF)
for the
Model S251 Control Unit
(Ref. Document No. 905–E1805–63 Rev. C)
Model: S251
Product: Control Unit
Part Number: S251–1120–00
S251–1130–00
S251–1170–00
Manufacturer: L-3 Communications, Aviation Recorders
6000 Fruitville Road, Sarasota, FL 34232
P.O. Box 3041, Zip Code 34230-3041
TSO Number: C123a
Manufacturer’s Specification and/or Other Applicable
Specification: Aviation Recorders Document 905–E0984–07,
EUROCAE ED–56A, RTCA/DO–160C
Conditions
RTCA/DO–160C
Section
Description of Conducted Tests
Temperature and Altitude
Low Temperature
Ground Survival
Operating
4.0
4.5.1
4.5.1
Equipment tested to Categories A2 & F2.
1
–55
°
C
–55
°
C
High Temperature
Ground Survival
Operating
4.5.2
4.5.3
+85
°
C
+70
°
C
Altitude
4.6.1
+55,000 feet
Decompression
4.6.2
+55,000 feet
Overpressure
4.6.3
–15,000 feet
Temperature Variation
5.0
Equipment tested to Category B.
Humidity
6.0
Equipment tested to Category A (Standard).
Operational Shocks & Crash Safety
Operational Shock
Crash Safety (Impulse)
Crash Safety (Sustained)
7.0
7.2.2
7.3.1.1
7.3.2.2
6 g, 11 milliseconds
15 g, 11 milliseconds
12 g, 3 seconds
Vibration
8.0
Equipment tested to Category C’ using Curve
C, standard procedure. There were no changes
in the performance or vibration resonances.
Robust
8.6.2
Standard
Explosion Proofness
9.0
Equipment tested to Category E1.
Waterproofness
10.0
Equipment identified as Category X, no test
required.