[{"data":1,"prerenderedAt":211},["ShallowReactive",2],{"article-cessna172-mip-frame":3},{"id":4,"title":5,"body":6,"description":200,"downloads":201,"extension":202,"lastUpdated":203,"meta":204,"navigation":205,"path":206,"readingTime":207,"seo":208,"stem":209,"__hash__":210},"projectArticles\u002Fprojects\u002Fcessna172\u002Fmip-frame.md","MIP Frame & Structure",{"type":7,"value":8,"toc":190},"minimark",[9,14,31,34,38,41,63,76,80,87,107,111,114,128,132,175,183,187],[10,11,13],"h2",{"id":12},"overview","Overview",[15,16,17,18,22,23,26,27,30],"p",{},"The MIP frame is the backbone of the entire cockpit. It is the fixed structure that bolts into the cockpit shell and accepts one of two ",[19,20,21],"strong",{},"drop-in avionics modules"," — the classic ",[19,24,25],{},"Six-Pack panel"," or the ",[19,28,29],{},"Garmin G1000 panel"," — without any changes to the frame itself.",[15,32,33],{},"The frame is designed in Fusion 360 from reference photographs of the real 172SP interior and dimensions taken from the Cessna 172SP Pilot's Operating Handbook.",[10,35,37],{"id":36},"panel-structure","Panel Structure",[15,39,40],{},"The main frame is cut from 3mm MDF and painted in the standard Cessna interior grey (close match: RAL 7035). It is divided into three sections:",[42,43,44,51,57],"ul",{},[45,46,47,50],"li",{},[19,48,49],{},"Upper panel"," — accepts either the Six-Pack instrument cluster or the G1000 PFD\u002FMFD module",[45,52,53,56],{},[19,54,55],{},"Glareshield"," — accepts either the KAP 140 or GFC 700 autopilot control unit",[45,58,59,62],{},[19,60,61],{},"Lower sub-panel"," — fuel selector, fuel quantity gauges, avionics master, pitot heat, and lighting controls — shared by both variants",[64,65,67],"content-callout",{"type":66},"info",[15,68,69,70,75],{},"The lower sub-panel houses the master caution\u002Fwarning annunciators. See ",[71,72,74],"a",{"href":73},"\u002Fprojects\u002Fcessna172\u002Fannunciator-box","Annunciator Box"," for the shared annunciator module used here.",[10,77,79],{"id":78},"swap-mechanism","Swap Mechanism",[15,81,82,83,86],{},"The upper panel and glareshield sections are designed as a single bolt-in ",[19,84,85],{},"avionics module"," — either the Six-Pack or G1000 variant — that mounts to the frame via a common bolt pattern.",[42,88,89,95,101],{},[45,90,91,94],{},[19,92,93],{},"Mounting"," — a common bolt pattern around the upper panel and glareshield cutouts accepts either module",[45,96,97,100],{},[19,98,99],{},"Alignment"," — dowel pins or corner brackets ensure the module seats in the same position every time",[45,102,103,106],{},[19,104,105],{},"Tooling"," — swapping modules should require no tools beyond a hex key",[10,108,110],{"id":109},"wiring-harness-connector","Wiring Harness Connector",[15,112,113],{},"A single multi-pin connector carries all signals between the avionics module and the frame's fixed wiring (power, ESP32 buses, shared switches).",[42,115,116,122],{},[45,117,118,121],{},[19,119,120],{},"Connector type"," — to be selected (candidates: DB25, Molex Mini-Fit Jr, or similar multi-pin connector)",[45,123,124,127],{},[19,125,126],{},"Pinout"," — will be defined once the Six-Pack and G1000 modules' ESP32 wiring is finalised, so the connector covers the union of both variants' signals",[10,129,131],{"id":130},"display-apertures-g1000-module","Display Apertures (G1000 Module)",[133,134,135,151],"table",{},[136,137,138],"thead",{},[139,140,141,145,148],"tr",{},[142,143,144],"th",{},"Display",[142,146,147],{},"Real size",[142,149,150],{},"Sim monitor",[152,153,154,166],"tbody",{},[139,155,156,160,163],{},[157,158,159],"td",{},"G1000 PFD",[157,161,162],{},"10.4\" diagonal",[157,164,165],{},"10.1\" IPS touchscreen",[139,167,168,171,173],{},[157,169,170],{},"G1000 MFD",[157,172,162],{},[157,174,165],{},[15,176,177,178,182],{},"The Six-Pack module instead uses individual instrument cutouts — see each instrument's page in the Six-Pack Panel section of ",[71,179,181],{"href":180},"\u002Fprojects\u002Fcessna172","In This Project",".",[10,184,186],{"id":185},"status","Status",[15,188,189],{},"Frame layout is being finalised in Fusion 360. DXF export for laser cutting is pending. Swap mechanism and wiring harness connector are in the planning phase.",{"title":191,"searchDepth":192,"depth":192,"links":193},"",2,[194,195,196,197,198,199],{"id":12,"depth":192,"text":13},{"id":36,"depth":192,"text":37},{"id":78,"depth":192,"text":79},{"id":109,"depth":192,"text":110},{"id":130,"depth":192,"text":131},{"id":185,"depth":192,"text":186},"The Cessna 172SP Main Instrument Panel frame — the swappable shell that accepts either the Six-Pack or G1000 avionics module, plus the swap mechanism, wiring harness connector, and sub-panel.",null,"md","2026-06",{},true,"\u002Fprojects\u002Fcessna172\u002Fmip-frame",6,{"title":5,"description":200},"projects\u002Fcessna172\u002Fmip-frame","DhbDY05HfCIP7foZ7ZQu-QGmOCVgaydjykZ32snSbKY",1781294861193]