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Appendix 1 to ETSO-2C124c - MPS for Crash-Protected Airborne Recorder Systems

Available versions for ERULES-1963177438-18088

ED Decision 2020/011/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

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###### Appendix 1 to ETSO-2C124c – MPS for Crash-Protected Airborne Recorder Systems

*ED
Decision
2020/011/R*

The
standard EUROCAE ED-112a, MOPS for Crash Protected Airborne Recorder
Systems, dated September 2013, shall be modified as per Table 1
below.

***Table
1 — Modification of EUROCAE ED-112A***

<table bgcolor="#d9d9d9" cellpadding="7" cellspacing="0">
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<td bgcolor="#808080">
Location
</td>
<td bgcolor="#808080">
Initial
			ED-112A text
</td>
<td bgcolor="#808080">
Amending
			text
</td>
</tr>
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2-1.16.2

a.
			iii.
 

</td>
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Impact
			shock, shear and tensile test, penetration resistance, static
			crush, deep sea pressure and sea water immersion.
</td>
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Impact
			shock, shear and tensile test, penetration resistance, static
			crush, deep sea pressure and sea water immersion. Deep sea
			pressure and sea water immersion may be performed on two different
			units provided that both units undergo the rest of the sequence
			and that the period of the deep sea pressure test is 90 days.
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2-4.2.7
a.
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Unless
			it can be shown that the recording medium can withstand the
			conditions associated with deep sea immersion and that it is
			unlikely to be damaged as a consequence of collapse of any
			protective armour, immerse the recorder in sea water at a pressure
			of 60 MPa (equivalent to a depth of 6 000 m (20 000 ft) for a
			period of 30 days.
This
			period may be reduced to 24 hours provided that the methods and
			materials used to protect the recording medium have been shown to
			be unaffected by sea water. To avoid damage to the test equipment,
			this test may be performed using any suitable liquid in the
			pressure chamber itself together with a means to separate this
			liquid from the sea water in which the recorder is immersed.
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Unless
			it can be shown that the recording medium can withstand the
			conditions associated with deep-sea immersion and that it is
			unlikely to be damaged as a consequence of the collapse of any
			protective armour or except if the recorder is deployed during or
			following impact with water, immerse the recorder in seawater at a
			pressure of 60 MPa (equivalent to a depth of 6 000 m,
			i.e. 20 000 ft) for a period of 90 days.
This
			period may be reduced to 24 hours provided that the test is
			performed once more after the sea water immersion test in 2-4.2.7
			b. To avoid damage to the test equipment, this test may be
			performed using any suitable liquid in the pressure chamber itself
			together with a means to separate this liquid from the seawater in
			which the recorder is immersed.
</td>
</tr>
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2-4.2.7
b.
</td>
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Unless
			it can be shown that the recording medium and the identification
			required by paragraph 2-1.16.3 are resistant to the corrosive
			effects of sea water, immerse the recorder in sea water at a depth
			of 3 m and nominal temperature of + 25°C for a period of 30
			days.
</td>
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Unless
			it can be shown that the recording medium and the identification
			required by paragraph 2-1.16.3 are resistant to the corrosive
			effects of seawater, immerse the recorder in seawater at a depth
			of 3 m and a temperature of at least + 25.0 °C for
			a period of 90 days.
</td>
</tr>
</table>

[Amdt ETSO/16]