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McFarlane Fuel Vent Lines For Cessna 150 Series MC0400311-119K

1 Review 2 Answered Questions
$257.95/Each
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Part# 05-18438
MFR Model# MC0400311-119K

Overview

Note for 150, 150A aircraft models: Only eligible for use with the upgraded Cessna vent assembly 0523552-2. These aircraft originally used 1/4" vent lines, however they may be upgraded to a 3/8" vent line with the installation of the P/N 0523552-2 vent assembly per the applicable IPC.

The fuel vent line on most Cessna single engine aircraft attaches to a check valve inside the tank to prevent fuel from flowing out of the vent line, but this valve has a weep hole that allows some fuel to pass to prevent pressurization of the fuel tanks. Unfortunately, this weep hole is much lower than the fuel level of a full tank. Fuel will continuously leak out of the vent line until the fuel level is below the weep hole. With the original vent line, you cannot fill the tanks without wasting a lot of fuel.

The Cessna heritage aircraft also have a tank interconnect vent line that allows fuel from both tanks to leak out of the vent. When parked on an unlevel surface, the fuel loss from these aircraft may be many gallons.

McFarlane has solved this problem with a redesigned vent line featuring a unique hump that rises above the top of the tank. Some fuel can still escape through the weep hole and out the vent to prevent pressurization of the fuel tanks. However, fuel will stop leaking once the pressure is relieved, and the tanks will remain full.

Convenient Kits
Kits with a new connection hose (where required) and rubber grommet are also available where applicable. Just add a "K" suffix to the part number.
   
California Prop 65 Warning Symbol

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

Features

  • Stops asphalt damage
  • Stops environmental damage
  • Fly with full tanks
  • Extends useful range
  • Pays for itself quickly at $5 per gallon
  • Adds value to your airplane
  • FAA-PMA direct replacement, no STC or 337 form needed

Installation Tip

  • Access to loosen to tighten the vent line in most of the Cessna aircraft is very tight because the tube flare nut ("B" nuts) sits partway in the wing rib. However, with the right wrench, you can normally loosen the nut from the under-wing inspection holes without removing the top tank access skin. The fitting in the tank has indexing flats and will normally not rotate while the tube flare nut is being loosened and re-tightened for the new line. Use caution in starting the nut as the tank fitting is a welded assembly with soft aluminum. Be sure not to cross-thread or over tighten the nut as you can easily strip the threads on this fitting.

Eligible Aircraft

Make Series Model Start S/N End S/N Quantity Per Aircraft Location Comment
Cessna 150 150 17001 59018 1 LEFT FUEL TANK STANDARD TANKS with Cessna vent assembly 0523552-2
Cessna 150 150A 15059019 15059350 1 LEFT FUEL TANK STANDARD TANKS with Cessna vent assembly 0523552-2
Cessna 150 150B 15059351 15059700 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150C 15059701 15060087 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150D 15060088 15060772 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150E 15060773 15061532 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150F 15061533 15064532 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150G 15064533 15067198 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150H 15067199 15069308 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150J 15069309 15071128 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150K 15071129 15072003 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150K 15071129 15072003 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150L 15072004 15075781 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 150M 15075782 15079405 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150F F150-0001 F150-0067 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150G F150-0068 F150-0219 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150H F150-0220 F150-0389 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150J F150-0390 F150-0529 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150K F15000530 F15000658 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150L F15000659 F15001143 1 LEFT FUEL TANK STANDARD TANKS
Cessna 150 F150M F15001144 F15001428 1 LEFT FUEL TANK STANDARD TANKS
Cessna 152 152 15279406 15286033 1 LEFT FUEL TANK STANDARD TANKS
Cessna 152 F152 F15201429 F15201980 1 LEFT FUEL TANK STANDARD TANKS

Documents

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Reviews

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By far one of the best investments I made for my 150. This vent line works exactly as advertised. No more watching my hard earned money just pour out of my vent line with full tanks. My only regret is I wish I had done this sooner instead of waiting for my annual.

Mike D
February 17, 2022

Q&A

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Please note, Aircraft Spruce's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: is the MC0400311-119K for the standard range as depicted on Mcfarland website or is this for the long range tank as depicted on the eligible aircraft chart provided by the AS webpage? Thanx Jeff

This vent line is for the LH Standard range tanks.

Q: What type of aluminum is used to make these McFarlane Fuel Vent Lines For Cessna 150 Series MC0400311-119K?

5052-O