NTSB CAROL · Event
Event MIA91IA048
Aircraft involved
Probable cause & findings
COLLAPSE OF THE NOSE LANDING GEAR DURING THE LANDING ROLL DUE TO INADEQUATE NOSE GEAR ASSEMBLY AND FAILURE OF THE NOSE LANDING GEAR DRAG LINK BOLT.
Factual narrative
DURING THE LANDING ROLL, THE NOSE LANDING GEAR COLLAPSED. EXAM OF THE NOSE LANDING GEAR REVEALED THAT THE DRAG LINK BOLT (AN4- 27) WHICH CONNECTS THE UPPER AND LOWER DRAG LINK ASSEMBLIES WAS WORN & FAILED AS A RESULT. ACCORDING TO THE ILLUSTRATED PARTS CATALOG REVISED NOVEMBER 1982 & SUBSEQUENT REVISIONS, A NAS464P4- 27 BOLT PART NUMBER 402 940, IS SPECIFIED. THE CHANGE WAS REPORTEDLY DUE TO A PRODUCTION CHANGE. ON 7/29/86, PIPER ACFT ISSUED A SERVICE LETTER ADVISING OWNERS OF SPECIFIED PA-44-180 ACFT OF A MODIFICATION OF THE NOSE LANDING GEAR WHICH INCLUDES IN PART, REPLACEMENT OF THE DRAG LINK ASSEMBLY BOLT WITH THE NAS BOLT. Source: NTSB Aviation Accident Database (Pre-2008 Archive) Retrieved: 2026-02-12
Verbatim from NTSB's published report. Source file
NTSB_1990_MIA91IA048.txt.
Findings + structured fields enriched from FAA avall.mdb.
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