Republic Airways E175 Systems Interview Questions

What to Expect in a Republic Airways E175 Systems Interview

Republic Airways operates one of the largest Embraer 175 fleets in the world under capacity purchase agreements with American, Delta, and United. Their technical interview reflects that scale — expect a structured, systems-focused oral that goes well beyond rote memory. Interviewers want to see that you understand why systems work the way they do, not just what the QRH says.

The E175 is a fly-by-wire regional jet with integrated avionics, an FADEC-controlled powerplant, and several systems behaviors that trip up candidates who've only studied turboprops or older swept-wing jets. Knowing the aircraft's logic — how systems talk to each other, what degrades what — is what separates a 4 from a 2 on the scoring sheet.

High-Frequency Systems Topics at Republic

Based on recent pilot gouge, these are the systems categories that appear most consistently in Republic Airways E175 interviews:

Flight Controls

• Normal law, alternate law, and direct law — what triggers each degradation and what protections are lost
• How the PRIM and SEC computers distribute control surface authority
• Spoiler logic: ground spoilers vs. speedbrakes, deployment conditions, and what inhibits them
• High-lift system sequencing — slat/flap scheduling and SFCC architecture

Hydraulics

• Three independent systems (Green, Blue, Yellow) — which actuators each powers
• RAT deployment: when it auto-deploys, what it powers, and minimum speed considerations
• PTU operation and the characteristic sound candidates sometimes mistake for an engine issue
• Electric pump logic and when pumps auto-arm

Electrical

• AC and DC bus architecture — normal, abnormal, and emergency configurations
• Generator priority and load shedding sequence during dual generator failure
• Battery bus essentials: what remains powered when you're down to the hot battery bus

Engines and FADEC

• CF34-8E FADEC modes — normal, alternate, and manual reversion
• Thrust lever angle vs. N1 commanded — how FADEC interprets TLA position
• Engine start sequence: normal, assisted, and cross-bleed starts
• ATTCS — what activates it and what it commands

How Republic Structures the Oral

Republic's technical interview typically follows a scenario-based format where a single malfunction branches into several connected systems questions. An interviewer might start with an engine oil pressure indication, then pivot to discuss FADEC degradation, then ask about your one-engine-inoperative hydraulic availability. Studying systems in isolation leaves you exposed when the questions chain together.

Candidates consistently report that interviewers probe for understanding of system interdependencies — particularly how a hydraulic or electrical failure changes your flight control envelope. Know which flight control surfaces will operate in direct law only, and which may be unavailable entirely, before you walk in the door.

The Republic Airways interview prep section on Vectors to Hired includes 12,800+ operator-specific questions across 55 airlines, with a dedicated E175 systems bank drawn from recent pilot gouge. The AI Voice Coach scores your spoken answers on a 1–5 scale and identifies where your explanations break down under pressure — exactly the kind of feedback that's hard to get from a study buddy alone.

Study Strategy for the E175 Systems Oral

A focused two-week approach works well for most candidates with some turbine background:

• Week 1: Work through each ATA chapter systematically — flight controls, hydraulics, electrical, engines, pneumatics, fuel. Sketch system schematics by hand; drawing forces deeper encoding than reading.
• Week 2: Shift to scenario-based practice. For every malfunction, trace the cascade: what else is affected, what changes in your performance data, what does the approach look like.
• Practice speaking answers aloud. Interviewers evaluate your ability to communicate under pressure, not just recall facts. Fumbling through a correct answer reads as uncertainty.

For additional context on how regional airline technical interviews are structured across the board, the regional airline technical interview guide covers format differences, common failure points, and how to calibrate your depth of answer for the room.

If you're within 30 days of your Republic interview date, start with the free tier at Vectors to Hired to benchmark where your systems knowledge stands, then use the Pro question bank to drill the gaps before your sim date.