Walk me through your background + your path into aerospace + defense supply chain.

What it tests: Story arc - quantitative / planning training + programme + supplier exposure + regulatory awareness. Interviewers screen for candidates whose path lands on A+D supply chain as deliberate, not default - generic industrial planners who underestimate the regulatory + clearance + decade-thinking overlay get filtered fast.

Tell me about a supply chain project you've owned end-to-end.

What it tests: Programme + supplier rigor. Can the candidate walk problem framing -> data -> action -> sustained outcome cleanly across cross-functional stakeholders including programme + engineering + quality + contracts.

Why aerospace + defense supply chain vs commercial industrial, consumer, or pure consulting / finance?

What it tests: Authentic alignment - mission, long-lead supplier complexity, programme + regulatory rigor, multi-decade thinking. Interviewers test whether the candidate gets that A+D supply chain is not just industrial-supply-chain-with-extra-paperwork - the programme-of-record cadence + DPAS + clearance + DMSMS reshape the planning + sourcing mental model.

Why supply chain specifically vs programme management, engineering, contracts, or operations?

What it tests: Specificity. Generic 'I like supply chain because it's strategic' fails fast in A+D interviews.

What it tests: Real homework - programme + plant footprint + recent strategic moves + supply chain culture + tooling - not 'great brand'.

What's your read on our programme portfolio and supply chain footprint?

What it tests: Industry literacy - programme mix + phase, plant + supplier geography, long-lead category exposure, where the supply chain team likely focuses.

Tell me what you understand about our supply chain organisation and recent strategic moves.

What it tests: Maturity awareness - SIOP cadence, planning tooling, supplier strategy, recent rate-readiness / dual-source / CMMC / DMSMS programmes.

Walk me through how you'd run or improve a programme SIOP - tying programme demand to supplier capacity, rate-readiness, and EVM.

What it tests: SIOP fluency + programme instinct - can the candidate frame the cadence, name the programme-specific demand flows, tie supplier capacity to rate-readiness, integrate with EVM, and identify A+D-specific failure modes.

Supply Chain interview prep.

Trained on planner / buyer / subcontract manager / sourcing lead / SIOP lead / materials manager / programme supply chain manager / director-of-supply-chain interviews across primes + tier-1 + tier-2 (commercial aviation, military aviation, space, missiles, electronics + sensors).

What interviewers look for

Can the candidate run a credible programme SIOP - demand by programme phase, supplier capacity, rate-readiness, EVM integration?
Are they fluent in long-lead aero supplier strategy - titanium / forgings / castings / electronics / composites, dual-source vs single-source on capacity-constrained items?
Do they understand A+D regulatory overlay - DPAS, FAR / DFARS flow-down, ITAR / EAR, AS9100 / AS9120, counterfeit-parts (DFARS 252.246-7007)?
Can they manage subcontract + EVM flow-down + DCMA / DCAA exposure on major subcontracts?
Are they grounded in DMSMS + obsolescence + LTB on multi-decade programmes-of-record?
Can they execute rate-readiness through LRIP -> FRP transition - capacity ramp, supplier qualification, working capital?
Do they navigate cross-functional with programme management, engineering, quality, contracts, security, finance?
Long-game fit - buyer / sr buyer / subcontract manager / sourcing lead / programme SCM / director / VP supply chain trajectory?

Behavioural questions to expect

Walk me through your background + your path into aerospace + defense supply chain.
What it tests: Story arc - quantitative / planning training + programme + supplier exposure + regulatory awareness. Interviewers screen for candidates whose path lands on A+D supply chain as deliberate, not default - generic industrial planners who underestimate the regulatory + clearance + decade-thinking overlay get filtered fast.
Tell me about a supply chain project you've owned end-to-end.
What it tests: Programme + supplier rigor. Can the candidate walk problem framing -> data -> action -> sustained outcome cleanly across cross-functional stakeholders including programme + engineering + quality + contracts.
Why aerospace + defense supply chain vs commercial industrial, consumer, or pure consulting / finance?
What it tests: Authentic alignment - mission, long-lead supplier complexity, programme + regulatory rigor, multi-decade thinking. Interviewers test whether the candidate gets that A+D supply chain is not just industrial-supply-chain-with-extra-paperwork - the programme-of-record cadence + DPAS + clearance + DMSMS reshape the planning + sourcing mental model.
Why supply chain specifically vs programme management, engineering, contracts, or operations?
What it tests: Specificity. Generic 'I like supply chain because it's strategic' fails fast in A+D interviews.
Why this firm?
What it tests: Real homework - programme + plant footprint + recent strategic moves + supply chain culture + tooling - not 'great brand'.
What's your read on our programme portfolio and supply chain footprint?
What it tests: Industry literacy - programme mix + phase, plant + supplier geography, long-lead category exposure, where the supply chain team likely focuses.
Tell me what you understand about our supply chain organisation and recent strategic moves.
What it tests: Maturity awareness - SIOP cadence, planning tooling, supplier strategy, recent rate-readiness / dual-source / CMMC / DMSMS programmes.
Walk me through how you'd run or improve a programme SIOP - tying programme demand to supplier capacity, rate-readiness, and EVM.
What it tests: SIOP fluency + programme instinct - can the candidate frame the cadence, name the programme-specific demand flows, tie supplier capacity to rate-readiness, integrate with EVM, and identify A+D-specific failure modes.

Technical concepts to master

A+D SIOP + programme demand fundamentals

SIOP vs IBP in A+D context: SIOP (Sales Inventory + Operations Planning) = A+D label for monthly demand + supply alignment cycle; IBP (Integrated Business Planning) extends with 24-60 month financial + strategic horizon, EVM integration, scenario planning.
Programme-of-record demand: Defense programme demand derives from approved baseline + annual FY appropriation + customer-funded rate; commercial aviation derives from airline backlog + build position; sustainment from operational tempo + EOL forecast.
Rate-readiness: Programme capability to deliver at approved production rate - depends on internal touch labour + machine + supplier capacity especially long-lead, qualification status of dual sources, working capital, sub-tier health.
EVM integration: Earned Value Management on major programmes ties supply chain commitments to programme baseline - PO obligations roll up to BCWS / BCWP / ACWP -> SPI + CPI; supplier OTD affects schedule baseline.

Supplier strategy + long-lead aero materials + AS9100 / AS9102

Long-lead material capacity constraints: Titanium mill + forge + foundry + radhard semiconductor capacity is structurally constrained globally; sub-tier (mill / foundry) often the binding constraint, not the immediate supplier.
AS9100 / AS9120 / Nadcap: AS9100 = aerospace quality management system (manufacturers); AS9120 = distributors / stockists; Nadcap = process-specific accreditation (heat treat, NDT, composites, chemical processing).
AS9102 First Article Inspection (FAI): Mandatory first-article dimensional + material + functional inspection on first production lot - documented per AS9102 form before serial production release.
Should-cost in A+D context: Material + labour + overhead + margin build-up - with A+D specifics: specialty-metals premium, qualification + tooling amortisation, AS9100 / Nadcap overhead, EVM compliance cost, ITAR / clearance cost where applicable.

DMSMS + obsolescence + LTB mechanics

DMSMS - Diminishing Manufacturing Sources + Material Shortages: DoD term for the structural mismatch between platform life + component life; DMSMS forecasting tools (GIDEP, SAE GEIA-STD-0016) project parts-at-risk over 5-10 year horizon.
LTB (Lifetime Buy) economics: One-time purchase of remaining lifetime demand before supplier EOL - locks supply but creates capital tie-up, storage + shelf-life + warehousing cost, and write-down risk if demand drops.
Form-Fit-Function (FFF) substitute: Alternative part that meets form + fit + function of original without redesign - usually requires V&V re-qualification but avoids full ECP cycle.
Counterfeit parts in DMSMS context: Aftermarket / broker / grey-market parts to fill DMSMS gaps carry counterfeit risk - mitigated per AS5553 / AS6174 / DFARS 252.246-7007 via Trusted Supplier + source-inspection + testing + GIDEP monitoring.

A+D regulatory overlay - DPAS + FAR / DFARS + counterfeit + CMMC + ITAR

DPAS - Defense Priorities + Allocations System: FEMA-administered priority rating system for defense + emergency-preparedness orders - DO (defense) + DX (highest, presidential) ratings force suppliers to schedule rated orders ahead of unrated.
FAR / DFARS clause flow-down: Federal Acquisition Regulation + Defense FAR Supplement clauses flow from prime contract to subcontracts + POs - including specialty metals (DFARS 252.225-7008 / -7009), counterfeit parts (252.246-7007), cyber (252.204-7012), small business set-asides.
Counterfeit-parts regime - DFARS 252.246-7007 / AS5553 / AS6174: DFARS 252.246-7007 mandates counterfeit-parts detection + avoidance system for DoD electronic parts; AS5553 + AS6174 = SAE industry standards for electronic + non-electronic; Trusted Supplier preference + risk-based testing.
CMMC - Cybersecurity Maturity Model Certification: DoD cybersecurity certification framework (Levels 1-3) for contractors handling Federal Contract Information (FCI) + Controlled Unclassified Information (CUI) - phased into contracts.

Practical drills

You manage forgings + microelectronics for a programme transitioning from LRIP (24 ships/yr) to FRP (60 ships/yr) over 18 months. Forging unit cost $80K, lead time 52 weeks, single-source mill at 80% utilisation on this part. Microelectronic FPGA unit cost $15K, EOL announced by supplier in 12 months, remaining lifetime demand 25 years x 60/yr after FRP. Size the LTB on FPGAs at ~95% confidence on remaining demand. Quantify the rate-readiness gap on forgings + the working-capital impact of a capacity-reservation deposit at 10% of 3-year forward demand. Show your numbers.
A $3B revenue defense prime running 4 programmes (2 LRIP, 1 FRP, 1 sustainment) has a poorly-functioning SIOP - demand review skipped, programme demand sandbagged by PMOs, supply review focused on weekly fire-fighting, no executive SIOP teeth, ECP-driven baseline shifts not flowed to MRP. OTD stuck at 84%, supplier OTD 78%, ~30% of long-lead POs are expedites, EVM SPI 0.86, inventory 95 DOS. CSCO asks you to redesign. Walk me through your approach and 12-month roadmap.
Your programme sources structural titanium forgings from a single US mill that is now capacity-constrained at the sub-tier (ingot supply); programme is in late LRIP with FRP ramp in 18 months. Customer recently exercised DPAS DX rating on a competing programme at the same mill, pushing your delivery slot back 12 weeks. Specialty-metals DFARS clause limits sourcing to US + qualifying-country mills. ITAR controls the design data. CSCO asks whether to dual-source domestically, vertically integrate (insource forge), pursue qualifying-country source, or accept the slip + replan. Walk me through how you'd structure the decision and what additional data you'd need.

Smart-question anchors

Programme portfolio + phase mix - LRIP / FRP / sustainment balance + recent programme awards
SIOP / IBP maturity - cadence, executive SIOP teeth, EVM integration, tooling roadmap (Kinaxis / o9 / OMP / enterprise ERP IBP)
Long-lead supplier strategy - titanium / forgings / electronics rate-readiness, dual-source programme, supplier-development
DMSMS + sustainment posture - LTB cadence, customer-funded ECP queue, multi-decade governance
Regulatory + compliance - AS9100, CMMC certification level, counterfeit-parts programme maturity, recent DCMA / FAA audits

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