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Atlas / NTSB / MIA85IA203

NTSB CAROL · Event

Event MIA85IA203

1985-06-24 SAN JUAN, Puerto Rico Airport · SJU None 1 aircraft Status: Completed

Registry · N7DD

FAA Aircraft Registry record.

Make / Model

MITSUBISHI MU-2B

Year of manufacture

1974 · 11 years old at event

Engine

AIRESEARCH TPE331-5&6SER (776 hp)

Seats / Engines

9 seats · 2 engines

Last airworthiness date

19790501

ADS-B equipped

Yes — Mode-S A9502B

Registrant of record

PICKETT AVIATION LLC

Source: FAA Aircraft Registry (releasable master file).

Aircraft involved

Factual narrative

AFTER DEPARTURE THE NOSE GEAR UNSAFE LIGHT REMAINED ILLUMINATED PETER GEAR RETRACTION. ATTEMPTS TO GET A SAFE LIGHT ON THE NOSE GEAR IN THE EXTENDED POSITION WAS UNSUCCESSFUL AND WHEN THE AIRCRAFT LANDED IT SETTLED ONTO A PARTIALLY RETRACTED NOSE GEAR. INSPECTION OF THE AIRCRAFT REVEALED THAT THE NOSE GEAR STRUT HAD NOT FULLY EXTENDED AND THAT WHEN THE GEAR WAS RETRACTED THE NOSE GEAR TIRES CAUGHT THE NOSE GEAR DOORS PREVENTING THEM FROM OPENING. THE GEAR RETRACTED AGAINST THE GEAR DOORS CAUSING FAILURE OFTHE RETRACT JACKSCREW. A MICROSWITCH WHICH CUTS THE GEAR MOTOR OFF WHEN THIS CONDITION OCCURRS WAS FOUND OUT OF ADJUSTMENT AND DID NOT OPERATE. ADDITIONALLY IT WAS FOUND THAT THE MECHANICS WHO DID THE LAST GEAR RETRACT TEST ON THE AIRCRAFT USED A MAINTENANCE MANUAL FOR AN EARLIER MODEL AIRCRAFT WHICH DID NOT HAVE THIS SAFETY SWITCH THUS FAILING TO CHECK IT FOR ADJUSTMENT. NO REASON AS TO WHY THE NOSE GEAR STRUT DID NOT FULLY EXTEND WAS FOUND. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12

Verbatim from NTSB's published report. Source file NTSB_1985_MIA85IA203.txt. Findings + structured fields enriched from FAA avall.mdb. Full investigation docket on data.ntsb.gov ↗.

Related research

What the literature says.

Academic papers and agency reports matching this event's aircraft type or causal vocabulary (maintenance). Sourced from NASA NTRS, NTSB Safety Studies, FAA CAMI, AOPA Air Safety Institute, Embry-Riddle Scholarly Commons, arXiv, and the Semantic Scholar academic graph.

Browse the full corpus — academia portal ↗