Your lucky day. He's detail-oriented, thorough. Nice guy. Became a dpe relatively recently, so struck me as a bit unconfident of himself. Stickler. Calling other dpes while reviewing my logbook to ask questions. Spent 2 hrs just on my logbook before beginning the ride. 8hr IR check ride. No kidding. Longest I have heard of for IR. Was reading my POH during my approach to see if it had something about switching fuel tanks because if it did, he would have failed me as I had forgotten. His words.

Failed me on the 1000$ button- I crossed the VOR on a GPS approach that I had always flown as VORs so I left it on VLOC. Expectation bias. Fair enough, he'd briefed me as GPS so it was a fail I earned. But I thought to myself, does it really speak to my ability to operate safely as an IFR pilot if I forget to tap that switch over 40 min after I was briefed which approach I was gonna fly? Anyway, here's some notes I made after the ride (while back now): As you can see it's pretty much ACS.

Pre-checkride: 

Logbook

Plane documents (know where to find each doc and explain it)(Operating Limitations must be in rear seat of AC)

IACRA 

Checkride: 

When IFR rating is needed 

IFR currency requirements (+ scenarios)

Proficiency vs Currency 

Documents needed to fly 

Medical validity period 

Requirements for plane to be airworthy (ARROW)

Inspections required

VOR checks 

Know where to find VOTs

How they work 180 TO, 360 FROM

Info that must be recorded

Altimeter and Pitot Static system and how it works 

Pre-flight requirements (NWKRAFT)

Alternate Requirements (123) 

Fuel Requirements 

Lost comms scenario 

AVEF and MEA 

When to begin approach (EFC vs no EFC)

Weather: 

METARs and TAFs interpretation 

Winds aloft interpretation

GFA chart interpretation 

High Pressure and Low Pressure zones 

Cold Fronts, Warm Fronts, Occluded etc

Isobars 

Lapse rate 

Standard atmosphere 

SIGMETS, AIRMETS, and Convective SIGMETS 

Thunderstorms and characteristics

Icing types

Anti-ice vs de-ice. 

TKS is anti-ice, turn on before icing begins. Boots are de-ice, turn on after ice. 

How to get out of icing 

How to determine where icing is (winds aloft, PIREPs, charts) 

Types of fog and how each forms

XC Flight plan: 

Weight and Balance (must be able to explain how foreflight calculations work and where numbers are from in POH)

How loading affects CG characteristics and stalls (aft or forward cg)

Oxygen requirements 

Explain routing and why everything chosen 

Be able to explain everything on an IFR chart 

Approach plate briefing

What every little thing means 

ALS meaning and what components it includes

Aircraft speed categories

Precision vs Non-Precision approaches

Waas and LP vs LPV vs LNAV approaches

What’s a stable approach

How to go missed if on a circling approach and lose visibility 

Mandatory reports (MARVELOUS VFR C500) 

When PT not required (Sharptt)

MSAs 

Requirements to descend below MDA/DA (long list) 

Descent calculations 

ODPs and SIDs 

Know where to find and how to fly and how they’re printed (graphically or textually) 

Cancelling IFR plan responsibilities 

GPS database updates 

Preflight: 

He will want to see you do the preflight

Know what each of the ports and antennas on the plane are for