Mayday Square

One Day, Maybe, Mayday…

APCO Time-Proven Rescue Systems (since 1984)

Never fly without one!

Info

Saved Pilots

Apco Aviation started manufacturing the Mayday reserve parachute in 1984, and since then put over 30 000 pieces into service in the Paragliding and Hang Gliding markets. The Mayday has hundreds of life saving deployments to its name, from beginners to world champions ( Read letters from saved pilots).

The Mayday Square follows in the proud tradition of the Mayday Range, and is built to the same exacting standards that has made the Mayday range the benchmark of all reserve parachute systems.

The advantage of the square design is that it gives a more stable descent (less pendulum effect), and therefore has a lower sink rate!

The Mayday Square is compact in size and weight, making it both the lightest Mayday in our range, and our highest rated gr/kg rating at 9.16 grams for each Kg of load @120kgs.

This makes it a very attractive package for pilots concerned about the weight of their kit.

The Mayday Square is certified to EN standard at 100 [kg] with sink rate of ~5.4 [m/s].

In addition, the Mayday Square has been load tested to 120 [kg] with sink rate of ~5.6 [m/s], perfect in cases where higher load is required (Paramotor pilots) at the expense of a slight increase in sink rate.

It is currently available in one size, with a short dyneema bridle, for paragliding or Paramotoring.

Stable descent
Light weight
Low pack volume
Fast Opening
Low Sink Rate

Model - MD²	25
Surface Area [m²]	25
Projected Surface Area [m²]	14.8
Weight [kg]	1,010
Packed Size (mm)	200(L) x 190(W) x 80(H)
Packed Volume [cc]	3000
Sink Rate [m/s] (at 100 Kg)	5.4
Sink Rate [m/s] (at 120 Kg)	5.72
EN Load/Drop test	120
EN/LTF Certification	100
Grams per kg Load	10.89
Certification	EN - 100kg Load Tested to 120Kg

The Mayday Square boasts superior light-weight construction and materials. The canopy cloth is PN9 ripstop nylon. The skirt and canopy is reinforced with mil spec nylon tape, neatly wrapped and stitched with a precision double needle machine. The dyneema line attachments are sewn using automated pattern stitches into the canopy, reducing potential weak points while ensuring consistently high quality and strength.

The Bridle is made from 1700kg Dyneema Webbing. The attachment loop is covered with a Teflon sheath, to protect it from dangerous friction which may occur during deployment.

MSM – stands for Military Spec Monkey and confirms that our reserves are made from fabrics, designed and manufactured in accordance to the strictest Military Specifications. This adds another level of quality assurance.

Each MayDay reserve parachute is supplied in a kitbag. Which is a useful to keep other equipment in once your mayday is installed in your harness.

Options & Accessories

42025: Light Universal Bridle
62.00$

Light Universal Bridle :: Code 42025 :: Set of 2

Length: 1320mm (end to end)

Strength: < 1,700 [DaN]

Add to basket

43122F: Maillon no.6 – Zink plated Steel – Certified breaking load of 2000[Kg]
13.00$

Steel Plated RAPIDE MAILLON NO:6
For connection of Y-shaped bridle to the harness
MBL 2,000kg

Add to basket

44120SLT: Light Deployment Bag

Mayday deployment bag for use inside PG harness with integral reserve container.

Compatible MAYDAYS 16LT and 16/18 SLT

Read more

80016/80017: UNIVERSAL CONTAINER WITH FLIGHT DECK
83.00$ – 145.00$

Light weight, simple and elegant container for paramotor or free flight use.

Includes an optional flight deck with space for two instruments.

The Universal container has multiple attachment points to accommodate mounting on most paramotor frames/harnesses.

Available in 2 sizes to cover all sizes of APCO reserve parachutes

Select options This product has multiple variants. The options may be chosen on the product page

81155SLT – External Container for Mayday LT and SLT
46.00$ – 108.00$

light weight simple and elegant solution for your reserve.

Select options This product has multiple variants. The options may be chosen on the product page

Q: What is the opening time and minimum height for deployment?

A: APCO does not usually advertise this information as it depends on many variables that change in real life situations, and can therefore be very misleading.

According to the certification tests, the opening time is 2.75 seconds. This is measured during a controlled deployment test.

Minimum height – this is not a parameter measured during certification, but according to the opening time (2.75 seconds) – if you calculate falling speed of 16 – 32 m/s (32 m/s is the speed at which the certification test is done), then the min height required for deployment would be 44-88m, however, we advise that if you are in trouble, no matter how low, there is no harm in throwing, we have witnessed saves at very low altitudes!

Mayday	Area [m2]	Gores	Weight* [kg]	Volume [cc]	Packed Size [cm] Length x Width x Height	Sink Rate [m/s] (@ max Load)	Max Load [kg]	gr / kg (Load)***	Certification
Mayday Square	25	16	1.010	3000	20.0x19.0x7.0	5.4 @100 Kg 5.72 @120 Kg	120	9.16	EN/LTF Certification - 100kg EN Load/Drop test - 120 kg
MD 16 SLT Super Light Round	23	16	1.220	3100	24.5x18.5x11.5	6.15	100	12.20	EN Load/Drop Test by Air Turquoise
MD 16 LT Light Round	23	16	1.490	3550	27.0x21.0x10.0	6.15	100	14.90	EN Load/Drop Test by Air Turquoise
MD 16 Regular Round	23	16	1.890	4000	28.5x23.0x14.0	6.3	106	17.83	DHV GS-02-0004-88
MD 18 SLT Super Light Round	30.4	18	1.597	3950	28.5x22.5x12.0	5.1**	115	13.89	EN Certification EP021.2009
MD 18 LT Light Round	30.4	18	1.922	4800	31.0x22.5x13.0	5.1	120	15.6	LTF RG 061.2012
MD 18 Regular Round	30.4	18	2.220	4950	32.0x22.5x15.0	5.4	120	18.50	SHV PS0992.003
MD 20 SLT Super Light Round	37.5	20	2.083	4750	31.0x22.0x12.5	4.48**	130	14.80	EN Certification E.P022.2009
MD 20 LT Light Round	37.5	20	2.300	5000	32.0x23.0x12.5	4.48**	140	16.43	EN Certification EP056.2012
MD 20 Regular Round	37.5	20	2.690	5400	32.0x23.0x13	5.4	160	16.85	AFNOR/CEN 200143AP
GMD SLT Superlight Rogallo	36	16	1.950	5000	30.5x22.0x13.5	4 m/s@(90kg) 4.9m/s@(130Kg)	60-130	15.00	EN Certification EP057.2012
GMD Steerable Rogallo	39	16	2.900	5950	33.0x24.0x15.5	2.8 m/s@(90kg) 3.2m/s@(130Kg)	60-130	22.31	EN Certification EP009.2007
MD Bi Round Tandem Reserve	47	18	3.250	6100	33.5x27.0x13.5	5.4	200	16.25	AFNOR PS98228AP
MD 28UL High Capacity Round Reserve for Trikes	64	28	4.000	12600	37.0x23.0x20.0	6.3	340	11.76	EN Load test 12491:2001
Packed Size vs. Volume:
		The volume is measured by water displacement, and represents the smallest recommended packed volume, or the volume of the smallest recommended container to be used for the reserve. The specified volume is therefore far lower than the calculated volume that would be derived from the specified measurements. The Packed Size measurement represents the measurements of the factory packed, but not compressed reserve, ie. the max dimension for each axis, and in its specified deployment bag, as shipped from apco.
* Weight Excludes weight of optional long bridle for Hang-glider version: Add 190gr for Hanggliding (HG) Extension Bridle (Code: 43006), or Add 550gr for MD Bi HG Bridle (Code: 43002L)
** Sink Rate as measured by Air Turquoise test laboratory Stability rating by Air Turquoise (1 bad - 5 excellent)
*** Gram per [Kg] Load This is a unit that makes it easy to compare Reserves. The unit is calculated by dividing the weight of the reserve, by its max load rating. The lower the number, the lighter the reserve is for its carrying capacity.

Mayday Square

Info

Saved Pilots

Options & Accessories

42025: Light Universal Bridle

43122F: Maillon no.6 – Zink plated Steel – Certified breaking load of 2000[Kg]

44120SLT: Light Deployment Bag

80016/80017: UNIVERSAL CONTAINER WITH FLIGHT DECK

81155SLT – External Container for Mayday LT and SLT

Repack

Q: What is the opening time and minimum height for deployment?

Product Codes

42485: MayDay Presentation Bag