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Polarn Quick Pump

Polarn Quick Pump

Information Bulletin - Polarn Quick Pump Extension Hose Joiners

This is a notice regarding extension hose joiners for Polarn Quick Pump units.  It would appear that some joiners are not fuel tolerant and degrade once exposed.  This can subsequently cause a fuel filter blockage.  

Here is an extract from the bulletin produced by Flylight Airsports:

http://bmaa.org/files/polarn_quick_pump_extension_hose_joiner_safety_bulletin.pdf


Safety Alert Bulletin

Polarn Quick Pump - extension hose joiner

Applicability

This bulletin concerns only the extension hose sold as an optional extra (picture on right). We believe it only affects supply within the six months prior to the bulletin date – but urge checking nonetheless.

Please disregard if you only have the Quick Pump without the extension hose.

Problem

The plastic joiner piece in some extension hoses have been found to have a yellowish coating inside which softens on exposure to fuel and flakes off.

If fuel is passed unfiltered into an aircraft fuel system these flakes may enter the fuel system and possibility exists of restricted supply and engine power loss.

Inspection procedure and actions

Remove the joiner tube and inspect inside.

If inside is white in colour and smooth the correct tubing is present (the left tube in the photo on right).

If inside is yellow in colour, then it is the incorrect tubing (the tube on the right of the picture). If this is the case then the tube may be soaked in fuel and the coating cleaned off, but we recommend that the joiner is replaced. Flylight customers can contact us and we will send out replacement joiner tubes FOC.

Usage advice

When using Forecourt Mogas, and transferring fuel via jerry cans and pumps, users should be aware that contamination in the form of dirt, rust, paint flakes, water etc could be present at any stage in supply. The Polarn Quick Pump has a strainer at its base, but for use of transferring fuel for aircraft we strongly recommend that final stage filtering is carried out using a fine filter funnel such as the ‘Mr Funnel’ range.


Flylight Airsports Ltd. Sywell Aerodrome. Northampton. NN6 0BN. 01604 494459 / 644222

 

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