LOADING
Practical aviation fuel training — instruction, guided practice, practical assessment, competence decisions and certificates, with every module traceable to its source procedure.
Verify electrical continuity of the bonding system and measure product conductivity within limits.
The source wording is unclear, misspelled or uses an unverified unit. The original is kept as it stands — an authorised person confirms the final wording before the module can be published.
PURPOSE IS TO TEST ELECTRICAL CONTINUITY FRMO CLIP TO CLIP/CHASSIS
Procedure 6, line 17
The purpose is to test electrical continuity from clip to clip or clip to chassis.
Reason Source wording is damaged (“FRMO”) — confirm the intended sentence.
CONDUCTIVIJY VARIES WITH TEMPERATURE (IE INCREASES TOGETHER)
Procedure 6, line 33
Conductivity varies with temperature: as temperature increases, conductivity increases.
Reason Source wording is damaged (“CONDUCTIVIJY”) — confirm the intended sentence.
AFTER 3 SECONDS READING MUST BE lox ENGRAVED PROBE NUMBER, WITHIN +/- 5ps/m
Procedure 6, line 40
After 3 seconds the reading must be 10× the engraved probe number, within ±5 pS/m.
Reason The source reads “READING MUST BE lox ENGRAVED PROBE NUMBER” — the multiplier is OCR-damaged. Confirm the expected relationship to the probe number.
IMMERSE PROBE ONLY INTO SAMPLE, ILT MINIMUM, UNTIL LOWER HOLES COVERED
Procedure 6, line 45
Immerse only the probe into a sample of at least 1 litre, until the lower holes are covered.
Reason The source states the sample size as “ILT MINIMUM” — the unit is unreadable. Confirm the minimum.
Position, PPE and equipment, manual handling, risk assessment and safety awareness
Why The preparation decides how safely everything that follows can be done.
Expected Correct position, correct PPE, equipment present, hazards identified.
If it fails Correct the position or fetch the missing equipment before continuing.
Source: procedure 6, line 13 — “CORRECT PPE FOR TASK, REQUIRED EQUIPMENT”
Select the meters used
The continuity meter tests electrical continuity from clip to clip or clip to chassis.
Source: procedure 6, line 17 — “PURPOSE IS TO TEST ELECTRICAL CONTINUITY FRMO CLIP TO CLIP/CHASSIS”
Meter is not defective and the housing is undamaged
Source: procedure 6, line 18 — “CHECK METER IS NOT DEFECTIVE AND HOUSING FOR DAMAGE”
The meter is battery powered and preset to a maximum operating level of 25 ohms.
Source: procedure 6, line 19 — “AUAC METER IS BATTERY POWERED AND PRESET TO MAX OP LEVEL OF 25 OHMS”
Touch and hold the lead testing clips together to self-calibrate
Source: procedure 6, line 20 — “TOUCH AND HOLD LEAD TESTING CLIPS TOGETHER TO SELF CALIBRATE”
‘ER’ on the display means calibration has failed or there is no power.
Source: procedure 6, line 21 — “IF 'ER' SHOWS CALIBRATION HAS FAILED OR NO POWER”
A green flashing LED with 88 on the display means the clips must be separated within 10 seconds.
Source: procedure 6, line 22 — “IF LED FLASHES GREEN, DISPLAY SHOWS 88, SEPARATE CLIPS WITHIN 10 SECONDS”
A red flashing LED with ‘HI’ indicates an open circuit — the meter is serviceable.
Source: procedure 6, line 23 — “IF LED FLASHES RED, DISPLAY SHOWS 'HI' INDICATING OPEN CIRCUIT, METER IS SERVICEABLE”
Repeat the steps to set the meter to test mode, then test the system within 10 seconds
Source: procedure 6, line 24 — “REPEAT ABOVE STEPS TO SET METER TO TEST MODE, WITHIN 10 SECONDS TEST SYSTEM”
Clip one lead to the bonding clip and the other to a bonding clip, stud or chassis
Why Paint, dirt or moisture on the contact point gives a false reading.
Expected Test surfaces clean, dry and unpainted.
Source: procedure 6, line 25 — “CLIP ONE LEAD TO BONDING CLIP AND OTHER TO BONDING CLIP/STUD/CHASSIS TEST SURFACES MUST BE CLEAN, DRY, UNPAINTED”
Continuity reading
Expected 25 ohms or less to pass.
If it fails The system is defective and must be repaired before use.
Limit max 25 ohms
Source: procedure 6, line 26 — “TO PASS MAXIMUM ALLOWABLE CONTINUITY READING IS 25 OHMS”
Cable slowly wound in during the test to check reel continuity
Why A break inside the reel only shows while the cable is moving.
Source: procedure 6, line 27 — “DURING TEST CABLE MUST BE SLOWLY WOUND TO TEST REEL CONTNUITY”
A red flashing LED treated as a failed test — system defective, repaired before use
Source: procedure 6, line 28 — “TEST FAILS IF LED FLASHES RED, SYSTEM IS DEFECTIVE, MUST BE REPAIRED BEFORE USE”
Meter allowed to time out before setting up the next test
Source: procedure 6, line 29 — “ALLOW METER TO TIME OUT BEFORE SETTING FOR NEXT TEST”
Test results and readings recorded
Source: procedure 6, line 30 — “RECORD TEST RESULTS AND READINGS”
The static dissipator additive improves the ability of the product to dissipate built-up static.
Source: procedure 6, line 32 — “STATIC DISSIPATOR (STADIS 450) ADDITIVE IMPROVES ABILITY OF PRODUCT TO DISSIPATE BUILT UP STATIC”
Conductivity varies with temperature — the two rise together.
Source: procedure 6, line 33 — “CONDUCTIVIJY VARIES WITH TEMPERATURE (IE INCREASES TOGETHER)”
Attach the probe and press and hold ‘M’ to check the zero
Source: procedure 6, line 35 — “TO CHECK ATTACH PROBE, PRESS/HOLD 'M'”
After 3 seconds the reading is zero, within ±1 pS/m
If it fails Remove the probe and check again. If it passes, clean and dry the probe; if it fails, adjust the zero while ‘M’ is pressed.
Source: procedure 6, line 36 — “AFTER 3 SECONDS READING MUST BE ZERO TO +/-1pS/m”
Zero adjusted if the check failed
Source: procedure 6, line 37 — “IF NOT REMOVE PROBE TO CHECK AGAIN, IF PASSES CLEAN/DRY PROBE”
Press ‘C’ to check calibration
Source: procedure 6, line 39 — “CHECK CALIBRATION, PRESS 'C'”
Calibration reading matches the engraved probe number, within ±5 pS/m
If it fails Adjust the calibration while pressed. If it still fails, check the batteries and clean the contacts.
Source: procedure 6, line 40 — “AFTER 3 SECONDS READING MUST BE lox ENGRAVED PROBE NUMBER, WITHIN +/- 5ps/m”
Batteries checked and contacts cleaned if calibration still fails
Source: procedure 6, line 41 — “IF FAILS ADJUST CALIBRATE HOLE WHILST PRESSED”
Conductivity readings are affected by exposure to sunlight. Shade the sample while measuring.
Source: procedure 6, line 43 — “CONDUCTIVITY READINGS AFFECTED BY EXPOSURE TO SUNLIGHT”
Use a steel bucket for the sample
Source: procedure 6, line 44 — “PREFERABLY USE STEEL BUCKET”
Immerse only the probe into the sample until the lower holes are covered
Source: procedure 6, line 45 — “IMMERSE PROBE ONLY INTO SAMPLE, ILT MINIMUM, UNTIL LOWER HOLES COVERED”
Probe kept away from the sides of the container
Source: procedure 6, line 46 — “DO NOT TOUCH CONTAINER SIDES”
Conductivity reading
Expected Between 50 and 600 pS/m.
If it fails Outside the limits — do not release the product and inform the supervisor.
Limit min 50 · max 600 pS/m
Source: procedure 6, line 34 — “METER MEASURES CONDUCTIVITY IS WITHIN LIMITS OF 50-600 PICOSIEMENS PER METRE”
Sample temperature at the time of the reading
Why The reading cannot be judged without the temperature it was taken at.
Source: procedure 6, line 48 — “RECORD TEMPERATURE AS THIS AFFECTS CONDUCTIVITY”
Remove the probe, clean and dry it, and stow it away from direct heat and moisture
Source: procedure 6, line 49 — “REMOVE PROBE CLEAN DRY AND SAFELY STOW FROM DIRECT HEAT MOISTURE”
What are the conductivity limits for the product?
What is the maximum allowable continuity reading?
The LED flashes red during the bonding test. What does that mean and what do you do?
Comments and praise
Trainer observation
Trainee acknowledgement
Assessor competence decision