CATEGORY

Aerospace & Defence

AS9102 · Rev C · 2023

Aerospace First Article Inspection

Form 1, 2, 3 walkthrough. Common rejection patterns from Boeing, Airbus, HAL, Tata Advanced Systems inspectors. Characteristic accountability rules.

Form 1 · Form 2 · Form 314 min read
AS9100 · Rev D

Aerospace Quality Management

QMS for aerospace suppliers. Differences from ISO 9001, design controls, configuration management, supplier qualification.

QMSIn progress
NADCAP

Special Process Accreditation

NADCAP for heat treat, surface treatment, NDT, welding. Audit checklist by process. Why HAL and DRDO require NADCAP suppliers.

Heat Treat · NDT · WeldingIn progress
DCMA · 8210.1

Contract Quality Assurance

US Defence supplier requirements. CDRL, DD250, source inspection vs final acceptance. Indian defence offset implications.

DefenceIn progress
CATEGORY

Automotive & Industrial

PPAP · 4th Edition · AIAG

Production Part Approval Process

All 18 elements. Levels 1–5 explained. Tata Motors, Mahindra, Bajaj, Hero, Maruti specific variations from AIAG manual.

18 elements · 5 levelsIn progress
IATF 16949 · 2016

Automotive Quality Management

Replaces ISO/TS 16949. Sector-specific QMS for automotive supply chain. Customer-specific requirements (CSR) handling.

QMSIn progress
APQP · AIAG

Advanced Product Quality Planning

5 phases of new product introduction. Gate reviews, deliverables, integration with PPAP submission timeline.

NPI · APQPIn progress
VDA 6.3

German Automotive Process Audit

VW, BMW, Mercedes process audits. Difference from IATF 16949. Audit scoring, P-process, U-process.

Process auditIn progress
CATEGORY

Medical & Pharma

ISO 13485 · 2016

Medical Device Quality Systems

QMS for medical device manufacturing. Design controls, design history file, FDA 21 CFR 820 alignment, CDSCO India requirements.

QMS · Med DevicesIn progress
FDA · 21 CFR 820

FDA Quality System Regulation

US medical device manufacturing rules. CAPA, design controls, MDSAP, 510(k) submission FAI requirements.

FDA · MedDevIn progress
CATEGORY

Drawing & Tolerances

ASME Y14.5 · 2018

Dimensioning & Tolerancing

Full GD&T standard. 14 symbols, datums, feature control frames, MMC/LMC, profile tolerances. 2018 changes from 2009 version.

GD&T · 14 symbols22 min read
ISO 286 · 2010

Limits, Fits, Tolerances

Hole-basis & shaft-basis tolerance system. IT grades. Practical fit selection. Difference from ASME B4.2.

Fits · IT gradesIn progress
ISO 2768 · mK / mF

General Tolerances

Linear, angular, form tolerance defaults. f, m, c, v classes. When to apply ISO 2768 vs explicit dimensioning.

DefaultsIn progress
ISO 1101 · 2017

Geometric Product Specifications

European GD&T equivalent of ASME Y14.5. Datum systems, geometric tolerance application, modifier rules.

GD&T · ISOIn progress