Like all pages on this website, any and all information provided is for informational purposes only. If there are any conflicts with the AFM (POH) of a specific aircraft, the latter is the authoritative source.
Diamond’s MÄMs and OÄMs (Mandatory and Optional modifications) are not always as clearly defined and transparent as they appear to be.
The below table is based on the one found in Section 1.1 which points out that the equipment and modification level (design details) of an airplane may vary from serial number to serial number.
A more detailed/complete equipment list for a given serial number is recorded in Section 6.5 (Mass & Balance | Equipment List & Inventory).
Some items are marked with * asterisks; see bottom section for clarifying details on those.
|Use of Diesel Fuel||MÄM 42-037||☐||☐|
|Increased Take-Off Mass||☒||☒|
|New Engine Instrument Markings||MÄM 42-101||☒||☒|
|Autopilot Static Source||☐||☒|
|TAE 125-02-99 Engine||MÄM 42-198||☒||☒|
|ECU Backup Battery||MÄM 42-240||☒||☒|
|ECU Firmware TAE-125 m2.91,|
ECU Mapping R28V291DIA
|Ice Protection System||☒||☒|
|Ice Protection System|
|Oxygen System||OÄM 42-055||☐||☐|
|Auxiliary Fuel Tanks||OÄM 42-056||☒||☒|
|Front Seats with Adjustable|
|Electrical Rudder Pedal|
|Mission Power Supply System||OÄM 42-074/a||☐||☐|
|Removable Fuselage Nose Cone||OÄM 42-077||☐||☐|
(Full CFRP Version)
|Operator Desk (CFRP Version|
with Aluminum Joint)
|Garmin GWX 68 Weather Radar||OÄM 42-119||☐||☐|
|ECU Backup Battery||OÄM 42-129||☒||☒|
|Exhaust End Pipe||OÄM 42-130||☐||☐|
|DA 42 M – IFR||☐||☐|
(Full Aluminum Version)
|Increase of Maximum|
Zero Fuel Mass
|Maximum Landing Mass 1785 kg||OÄM 42-195||☐||☐|
|Emergency Axe||OÄM 42-205||☐||☐|
|TAE 125-02-114 Engine||OÄM 42-252/b||☐||☐|
|Front Seats with Adjustable|
Backrest – Hydrolok
|Emergency Egress Hammer||OÄM 40-304||☐||☐|
** What that means is that in 9ES the AP shares the static line with the pitot-static instruments, while on 8US there is a dedicated static port/line for the AP on the left side of the fuselage. There is no difference during normal operations of the two planes.
*** 42-053 vs 42-054: Quote from a Diamond response:
“The difference between the two is simply what country the aircraft is being operated in. In the USA, the DA 42 is approved for Flight into Known Ice (FIKI), there the AFM supplement required is SO3, […] The installed systems are identical. It’s only the operational approvals which are different.”
Bottom line: Both N919ES and N238US are approved for FIKI.
**** 42-067: Backrest and lumbar support adjustment levers work on front L seat but not currently front R
***** 42-141: N/A (IFR with “Special Mission” / military variations of DA42s).
Both N919ES and N238US are IFR-certified airplanes.
As long as the IFR-related required equipment described in FAR 91.205(b) (“GRABCARDD”) and section 2.13 KINDS OF OPERATIONS in the AFM (POH) is operational you can enjoy flying IFR in these airplanes.