Rotax Piston EnginesRotax Piston Engines

Rotax Piston Engines

<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Applicability:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Bombardier Rotax 912 A, 912 F, 912 S and 914 F series reciprocating aircraft engines.</span></p></td></tr><tr style="height:387.65pt"><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span>Requirement:</span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>1.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Exchange current conventional engine coolant with a new coolant liquid type “Evans NPG+” per provisions of Bombardier Rotax Mandatory Service Bulletin SB-912-043 / SB-914-029 initial issue dated September 2004 or later revision approved by European Aviation Safety Agency (EASA).</span><span> </span><span></span><span>Operate the engine per Cylinder Head Temperature (CHT) limits specified in requirement 2 of this AD.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span>OR</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt"><span>Continue the use of conventional glycol / water coolant (mixing ratio 50/50).</span><span> </span><span></span><span>If you use this option, check the open-up pressure of the coolant pressure vessel cap. </span><span></span><span>The open-up pressure is marked on the cap. </span><span></span><span>If marked open-up pressure is any pressure other than “1.2 bar” or if marking is not legible or missing altogether, replace the cap with a new pressure vessel cap Rotax Part number 922.070. </span><span></span><span>Operate the engine per CHT limits specified in requirement 2 of this AD</span><span>.</span></p><p style="margin-top:12pt; margin-left:21.3pt; margin-bottom:12pt; text-indent:-21.3pt"><span>2.</span><span style="width:12.3pt; text-indent:0pt; display:inline-block"> </span><span>Make the following changes to the engine installation and operating manuals:</span></p><p style="margin-top:12pt; margin-left:42.55pt; text-indent:-21.25pt"><span>i)</span><span style="width:13.92pt; text-indent:0pt; display:inline-block"> </span><span>Operator’s Manuals Rotax 912 A/F Series, Chapter 10, Operating Limits.</span></p><table cellspacing="0" cellpadding="0" style="width:350.4pt; margin-top:0pt; margin-left:63.4pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr style="height:23.85pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">CHT</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span></span></p></td></tr><tr style="height:19.25pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of EVANS NPG+</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 150 Degree C</span></p></td></tr><tr style="height:28.85pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of Glycol / Water Coolant (50/50) and use of a 1.2 bar pressure vessel cap.</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 120 Degree C</span></p></td></tr></tbody></table><p></p></td></tr></tbody></table>

<table cellspacing="0" cellpadding="0" style="width:510.3pt; margin-top:0pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr style="height:605.55pt"><td style="width:74.35pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p><span></span></p></td><td style="width:414.55pt; padding-right:5.35pt; padding-left:5.35pt; vertical-align:top"><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>ii)</span><span style="width:10.59pt; text-indent:0pt; display:inline-block"> </span><span>Operator’s Manuals Rotax 912 S Series and 914 F series, Chapter 10, Operating Limits.</span></p><table cellspacing="0" cellpadding="0" style="width:350.4pt; margin-top:0pt; margin-left:63.4pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr style="height:22.55pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">CHT</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span></span></p></td></tr><tr style="height:18.65pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of EVANS NPG+</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 135 Degree C</span></p></td></tr><tr style="height:27.55pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of Glycol / Water Coolant (50/50) and use of a 1.2 bar pressure vessel cap.</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 120 Degree C</span></p></td></tr></tbody></table><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>iii)</span><span style="width:7.25pt; text-indent:0pt; display:inline-block"> </span><span>Installation Manual Rotax 912 A Series, Chapter 7.1, Operating Limits.</span></p><table cellspacing="0" cellpadding="0" style="width:350.4pt; margin-top:0pt; margin-left:63.4pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr style="height:19.8pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">CHT</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span></span></p></td></tr><tr style="height:22.95pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of EVANS NPG+</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 150 Degree C</span></p></td></tr><tr style="height:24.75pt"><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of Glycol / Water Coolant (50/50) and use of a 1.2 bar pressure vessel cap.</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 120 Degree C</span></p></td></tr></tbody></table><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>iv)</span><span style="width:7.92pt; text-indent:0pt; display:inline-block"> </span><span>Installation Manual Rotax 912 F Series, Chapter 6.1, Operating Limits.</span></p><table cellspacing="0" cellpadding="0" style="width:350.4pt; margin-top:0pt; margin-left:63.4pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">CHT</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span></span></p></td></tr><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of EVANS NPG+</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 150 Degree C</span></p></td></tr><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of Glycol / Water Coolant (50/50) and use of a 1.2 bar pressure vessel cap.</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 120 Degree C</span></p></td></tr></tbody></table><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>v)</span><span style="width:11.25pt; text-indent:0pt; display:inline-block"> </span><span>Installation Manual Rotax 912 S Series, Chapter 7.1, Operating Limits.</span></p><table cellspacing="0" cellpadding="0" style="width:350.4pt; margin-top:0pt; margin-left:63.4pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">CHT</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span></span></p></td></tr><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of EVANS NPG+</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 135 Degree C</span></p></td></tr><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of Glycol / Water Coolant (50/50) and use of a 1.2 bar pressure vessel cap.</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 120 Degree C</span></p></td></tr></tbody></table><p style="margin-left:42.55pt; text-indent:-21.25pt"><span>vi)</span><span style="width:7.92pt; text-indent:0pt; display:inline-block"> </span><span>Installation Manual Rotax 914 F Series, Chapter 8.1, Operating Limits.</span></p><table cellspacing="0" cellpadding="0" style="width:350.4pt; margin-top:0pt; margin-left:63.4pt; margin-bottom:0pt; border-collapse:collapse"><tbody><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span style="font-weight:bold">CHT</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span></span></p></td></tr><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of EVANS NPG+</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 135 Degree C</span></p></td></tr><tr><td style="width:223.25pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Use of Glycol / Water Coolant (50/50) and use of a 1.2 bar pressure vessel cap.</span></p></td><td style="width:105.55pt; padding-right:5.4pt; padding-left:5.4pt; vertical-align:top"><p><span>Max 120 Degree C</span></p></td></tr></tbody></table><p style="margin-left:21.3pt; text-indent:-21.3pt"></p></td></tr></tbody></table>

Image unavailable in extracted text
James Coyne
Delegate of the Civil Aviation Safety Authority

4 February 2005