The Flight 60 and 60T platform: piston or blower, oxygen options, boards, power and the patient circuit
Identify which Flight 60 or 60T variant is on the bench, trace the gas path from the intake filter to the patient connector, name the boards and assemblies that do each job, and know what to record before you open the case.
Which machine is in front of you
Two service manuals cover this family. The Flight 60 manual (LIT-0021, revision A11, December 2015) and the Flight 60T manual (LIT-0113, revision A16, written for software 5.41) share most of their chapters, their board names and their error table. Both list the same three variants: SL, which runs a single-limb circuit with an exhalation valve near the patient; DL, the dual-limb version with an exhalation valve on the front panel that receives the expiratory limb; and iO2, which carries an internal oxygen mixer fed from a high-pressure oxygen port. Both manuals give the same lower patient weight limit, 10 kg, so neither is a neonatal ventilator.
The difference that matters most to you is the gas source. The original Flight 60 builds its flow with a piston-driven manifold assembly; the manual warns you not to load the piston drive or lift the manifold by its bearings and rods. The 60T replaces the manifold with a blower assembly. Everything that follows from that, the life limit, the hour counter, which part a MOTOR FAULT points at, and the calibration list, differs between the two, so write the model on the job sheet before anything else.
Then look for the smaller differences. Some units have a single battery and no detachable pack. Older Flight 60 units may carry a Class I power supply, which the manual describes as obsolete and not interchangeable with the Class II supply now used. Keypads come with symbols or with printed words. The 60T adds a bias flow function with its own calibration, extra modes that the service screen can enable, a configurable purge period and an optional HL7 link through a communication box. The software version, shown on the information screen and per processor on the service screen, decides which procedure revision you follow.
- Flight 60: piston manifold; Flight 60T: blower
- SL, DL or iO2: look at the front panel for a DL exhalation port or a nebulizer port, and at the rear for a high-pressure oxygen inlet
- One battery or two; Class I or Class II power supply
- Software version for each processor, serial number, manifold or blower serial number and motor hours
- For comparison only: the Newport HT70 uses a micro-piston pump and the VELA a turbine; their courses cover them, and the methods do not transfer one to one
- Recalls: no FDA recall and no MHRA, TGA or BfArM field safety notice for the Flight 60 or 60T was found as of November 2026. The Philips V60 recalls are for a different ventilator; do not mix them up, and check the regulator databases again before each service visit
The gas path, read from intake to patient
Room air enters on the right side through the fresh gas intake. Behind a cover held by three screws sits a particle filter with an O-ring seal; it protects both the patient and the gas source from dust. The same socket takes the optional entrainment mixer or oxygen blending bag on models without an internal mixer. From the inlet assembly the air passes a flex tube and a muffler to the manifold or blower, which raises it to delivery pressure. Downstream sits the outlet assembly with a mechanical pressure-relief valve, set during calibration with a screw on the underside of the outlet fitting, and then the patient circuit connector on the front panel.
Expiration is controlled by a solenoid assembly that drives the exhalation valve: in SL units the valve sits in the circuit, in DL units on the front of the ventilator. The same solenoid group sets PEEP, which is why the manual sends you to the solenoid for PEEP, trigger and leak failures after the circuit and the diaphragm have been ruled out. A redundancy solenoid on the solenoid board provides a second path, and a purge board with two small check valves keeps the pressure sensing lines clear. The patient and outlet pressure sensors are on the main board itself, connected by colour-coded silicone tubes, so a pinched or loose tube inside the case shows up as a pressure or proximal-line message, not as a mechanical noise.
On the left side is the emergency air intake. If the ventilator stops completely, the patient can draw room air through it at a small negative pressure, about minus 3 cmH2O according to the manual. It is a safety path, and a blocked or damaged intake must be treated as a fault even if the ventilator otherwise works. Always fit a filter at the airway pressure connection: the manual is explicit that moisture reaching the internal sensors damages them.
Oxygen: three ways in
How oxygen reaches the patient depends on the variant, and so does every oxygen fault you will chase. The simplest path is the low-flow oxygen port on the rear panel, which enriches the air the ventilator draws in; FiO2 then depends on the oxygen flow and on minute volume. Models without an internal mixer can also use an external air/oxygen entrainment mixer or a blending bag on the fresh gas intake, with the oxygen percentage set on the mixer dial. In both cases the ventilator measures oxygen with its sensor but does not control it.
The iO2 variant takes oxygen at high pressure through a dedicated rear port into an internal mixer. The manual's error table says the source should be between 30 and 90 PSI. The mixer has its own inlet filters, two of them behind an O-ring, and an O2 leak sensor inside the case that watches for oxygen escaping into the enclosure. A separate O2 mixer neb board controls the mixer and the front-panel nebulizer port, and a nebulizer compensation value corrects delivered volume while the nebulizer runs.
All variants with an oxygen sensor carry it in the front part of the unit, behind the front panel, screwed into place and connected by a short cable. It is an electrochemical cell with a limited life. The manual tells you to disconnect oxygen before any disassembly, and the iO2 carries an O2 leak sensor in the case. The course adds a conservative rule from general oxygen safety: treat oxygen-enriched air inside a warm, closed case as a fire risk, so keep oil, grease and sparks away from the oxygen path.
Electronics: who does what
The main board is the centre of the machine. It is mounted on the back of the front panel, carries the processors, the pressure sensors, the memory that holds calibration data and serial numbers, and the two buzzers, and it drives the touch screen and the LED indicators. Because the system serial number, the manifold or blower serial number and the motor hour count live in its memory, a main board change is never only a mechanical job.
The power board plugs into sockets in the base of the ventilator and handles battery charging, power distribution and motor control; the error table points at it for charger faults and for one half of MOTOR FAULT. The power supply converts mains to the internal DC rail. Below the pneumatics sit the lower board and the small D-type board that carry the rear connectors. The solenoid board drives the solenoids and carries the purge board piggy-back. The front subassembly includes the touch screen, which cannot be separated from it: a failed touch screen means a new front subassembly. Ribbon cables between the boards lock with small latches, and the manual warns more than once not to pull them by the wires.
Power, batteries and the rear panel
The rear panel shows you the power architecture. Mains enters through an AC connector with two time-lag fuses; the manual rates the input at 100 to 240 V, 50 to 60 Hz, with 8 A fuses. A DC input accepts an external supply, 12 to 15 V on the Flight 60 and 12.5 to 15 V on the 60T. The detachable lithium-ion pack is rated 14.8 V and locks with a dial; a second, internal battery sits behind a panel on the underside. The front LEDs tell you which source is active: EXT PWR when external power is present, BAT when the unit runs on batteries, and LOW BAT when the combined charge is below half.
The other rear connectors matter in the workshop. One serial port outputs events and errors to a PC, the USB-B port is used for loading the main application, and the USB-A port takes a memory stick for log files and software packages. The second serial port is the remote alarm output, a dry contact with normally open and normally closed options and tight limits on current and voltage. The manual makes the integrator responsible for any connection to a nurse-call or remote alarm system, so if you find one wired in, record it and do not change it without the owner's agreement.
Lithium-ion packs lose capacity with age and with every cycle. The manual asks for at least three hours of charging before battery use and the same top-up every 30 days in storage, and it wants the unit left on mains when idle. A ventilator that has spent months in a cupboard will often arrive with a battery story rather than a real fault.
Before you open it
The manual sets a clear order, and it is a good one. Download the log files first, before any service attempt, because a restart or a board change can lose the history you need. Write down the system serial number, the manifold or blower serial number, the motor hours and the software versions. Then disconnect mains, external DC and the oxygen supply, remove the detachable and internal batteries, and only then take off the cover. The manual states that hazardous voltages are present inside and forbids working on an open unit connected to external power.
Clean the external accessories before the unit comes onto your bench, wear an antistatic strap, take off your watch and rings, and put the ventilator on a cushioned surface so the touch screen is not scratched. After any work inside, the manufacturer requires the operational verification procedure to pass completely before the ventilator returns to a patient. That rule is the thread that runs through the rest of this course.
| Part | What it does | How it fails | |
|---|---|---|---|
| 01 | Manifold assembly (Flight 60) / blower assembly (60T) | Gas source that raises intake air to delivery pressure | MOTOR FAULT, volumes or pressures not reached, end of life by hours or years |
| 02 | Main board | Processors, patient and outlet pressure sensors, calibration and serial data, buzzers, display drive | PRESS SENSOR, PROX LINE, MEMORY FAULT, failed LEDs or buzzer |
| 03 | Power board | Charging, power distribution and motor control | Charger and battery-range errors, MOTOR FAULT, 10 V power faults |
| 04 | Power supply (Class I or Class II) | Mains to internal DC conversion | No EXT PWR on mains; Class I is obsolete and not interchangeable |
| 05 | Solenoid assembly and solenoid board | Drive the exhalation valve and PEEP; redundancy solenoid | HIGH / LOW P BASE, PEEP or trigger out of tolerance, circuit test fails |
| 06 | Purge board with check valves | Keeps pressure sensing lines clear | Sensing errors, drifting pressure readings |
| 07 | Inlet assembly, intake filter and muffler | Filtered air path into the gas source | Clogged filter, leaking cover O-ring, inlet leak |
| 08 | Oxygen sensor; O2 leak sensor (iO2) | Measures delivered oxygen; detects oxygen in the enclosure | CHECK FiO2 SENSOR, calibration failure at end of life |
| 09 | Internal O2 mixer and O2 mixer neb board (iO2) | Mixes high-pressure oxygen and drives the nebulizer | O2 SUPPLY FAILED, oxygen out of tolerance, blocked mixer filters |
| 10 | Front subassembly with touch screen | Display, touch input, keypad and LED indicators | Dead or erratic touch; replaced as a whole |
Black dust in the valve block
On a JAY-10, a ventilator built around a piston compressor, the engineer was called for a high-side pressure error and a valve that would not work. Before ordering a valve he checked the compressor under load, then opened the valve block. The channels were coated with fine black dust: wear debris from the compressor's piston group, carried downstream over many hours. The block was stripped, the channels flushed and cleaned in isopropyl alcohol in an ultrasonic bath, dried, reassembled and tested, and the error did not return. The valve itself had been sound; it was the victim of a worn component upstream.
A piston gas source wears and sheds debris into everything downstream. On a Flight 60 the manufacturer's answer is to replace the manifold at its hour or year limit rather than overhaul it, but the lesson stands: when a downstream part fails on a high-hour machine, look at the gas source and its hours before you blame the part.
Rebuilt battery packs that the ventilator would not accept
On a ventilator whose model was not recorded, the batteries no longer held a charge and the owner wanted to save money by having the cells in the old packs replaced. The rebuilt packs were not accepted as new. The engineers found that the ventilator reads the serial number and cycle history from a controller inside each pack, so fresh cells in an old housing still report an old battery. Ideas to reprogram the pack controller were discussed and rejected. Genuine new packs were recognised by the ventilator without any service key.
Lithium-ion packs in modern ventilators carry their own electronics and history. On a Flight 60 or 60T fit only the manufacturer's approved packs, never rebuilt or reprogrammed ones, and treat battery errors after a pack change as a question about the pack first.
On-site checklist
- Model (60 or 60T) and variant (SL, DL, iO2) recorded
- Serial number, manifold or blower serial number and motor hours recorded
- Software versions read and noted
- Number of batteries and power supply class noted
- Log files downloaded before any service work
- Mains, external DC and oxygen disconnected; both batteries removed before the cover comes off
- Any remote alarm wiring recorded and left unchanged