# N421EX: 1966 Boeing 727-22C, registration cancelled 2007-05-05 - Type: Cancelled registration (FAA registry, deregistered aircraft) - Cancelled: May 5, 2007 - Status when cancelled: Valid registration - Airframe: [Boeing 727-22C](https://openairdocs.org/model/boeing-727-22c) (registry code 138400F) - Engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) - Serial number: 19099 - Year built: 1966 - Type of aircraft: Fixed wing multi engine - Airworthiness: Standard, transport - Airworthiness date: December 1, 1981 - Certificate issued: March 3, 2005 - Last registry action: April 25, 2005 - Mode S code: A4FFD0 - Owner when cancelled: [Stewart Industries International LLC](https://openairdocs.org/faa-owner/STEWART%20INDUSTRIES%20INTERNATIONAL%20LLC) - Location: [Guthrie, OK](https://openairdocs.org/faa-place/OK/Guthrie) - Owner type: Corporation - Owner's area on the map: 35.8679° N, 97.4344° W: Placed by OpenAirDocs at the center of ZIP code 73044, within about 9 miles (OpenAirDocs). The owner's mailing address, not where the aircraft was based - The mark today: https://openairdocs.org/aircraft/N421EX - FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=421EX - Page: https://openairdocs.org/deregistered/N421EX-2007-05-05 From the FAA registry file of October 28, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe. ADs and bulletins for the Boeing 727-22C: https://openairdocs.org/model/boeing-727-22c.md ## Service difficulty reports (13) Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. - [SDR 20010514SG007](https://openairdocs.org/sdr/20010514SG007), Mar 31, 2001: HYDRAULIC LINE. BROKEN. LOST ''A'' SYSTEM HYDRAULICS IN FLIGHT. RAN APPROPRIATE CHECK LIST. EMERGENCY DECLARED. REMOVED AND REPLACED BROKE HYDRAULIC LINE ON NR 2 SPOILER ACTUATOR. (M) - [SDR 20000718AP002](https://openairdocs.org/sdr/20000718AP002), Apr 26, 2000: PCU. LEAKING. FLT 714 - BUF-CLE - LOSS OF HYDRAULIC SYSTEM B QUANTITY AND PRESSURE ON DESCENT. FOUND POWER CONTROL UNIT LEAKING, REPLACED UPPER RUDDER POWER CONTROL UNIT. (M) - [SDR 20000428AP013](https://openairdocs.org/sdr/20000428AP013), Feb 1, 2000: ENGINE. VIBRATION. FLT 633 - ORD-SEA - DIVERTED INTO BIL, EXCESSIVE VIBRATION NR 3 ENGINE, OIL PRESSURE LIGHT ILLUMINATED OIL TEMPERATURE INCREASING. PRECAUTIONARY INFLIGHT ENGINE - [SDR 2000ZZZX455](https://openairdocs.org/sdr/2000ZZZX455), Nov 24, 1999: BULB. FAILED. RIC/IND - FLT 712 - RIGHT BULB IN SMOKE DETECTOR INDICATOR IS OUT. RELAMPED BULB. (X) - [SDR 99ZZZX4340](https://openairdocs.org/sdr/99ZZZX4340), Oct 26, 1999: FIRE LOOP. OUT OF POSITION. MSY/IND - FLT 708 - NR 3 ENGINE FIRE DETECTION GROUND FAULT LIGHT IS ILLUMINATED. (DEFERRED IN IND, CLEARED IN EWR). FOUND FIRE LOOP RESTING ON LOWER ENGINE COW - [SDR 99ZZZX4341](https://openairdocs.org/sdr/99ZZZX4341), Oct 24, 1999: FIRE LOOP. OUT OF POSITION. EWR/IND - FLT 711 - NR 3 GROUND FAULT LIGHT ILLUMINATED ALL OF THE TIME. (DEFERRED IN IND, CLEARED IN IAH). REPOSITIONED FIRE LOOP. (X) - [SDR 99ZZZM141](https://openairdocs.org/sdr/99ZZZM141), Jan 7, 1999: ENGINE. DAMAGED. AFTER LANDING AT LCQ, FOUND NR 2 ENGINE HAS FOREIGN OBJECT DAMAGE AS FAR BACK AS C-4 POSSIBLY MORE. NR 2 ENGINE WILL BE REPLACED. - [SDR 99ZZZM130](https://openairdocs.org/sdr/99ZZZM130), Dec 3, 1998: TURBINE. DAMAGED. FLT 720 - NR 1 ENGINE HAD 1 QUICK LOUD BANG ON TRIP FROM DTW TO IND. NOTICED OIL TEMP/PRESSURE WERE FINE. WITH N1 MATCHED N2, FUEL FLOW AND EGT VERY HIGH. ABOVE - [SDR 98ZZZM439](https://openairdocs.org/sdr/98ZZZM439), Feb 25, 1998: TURBINE. DAMAGED. FLT 613 - IND-CLT - HAD AN AIR TURN BACK TO IND. ON DEPARTURE FROM IND FELT VIBRATION IN RUDDER PEDAL'S AND FLOOR. NR 2 ENGINE HAD LOW N1 AND LOW EPR AND HIGH E - [SDR 97ZZZM696](https://openairdocs.org/sdr/97ZZZM696), Apr 3, 1997: CLAMP. BROKEN. NR 3 ENGINE FIRE WARNING ON CLIMB. REPLACED BROKEN CLAMP ON BLEED AIR DUCT. - [SDR 96ZZZX1639](https://openairdocs.org/sdr/96ZZZX1639), Feb 27, 1996: RETRACT MECH. MALFUNCTIONED. ON APPROACH INTO IND, LANDING GEAR HAD TO BE CYCLED THREE TIMES TO GET A DOWN AND LOCKED INDICATION ON THE RT MAIN GEAR. THE RED LIGHT REMAINED ON AND A GO-AROU - [SDR 95ZZZX6212](https://openairdocs.org/sdr/95ZZZX6212), Oct 1, 1995: RIVET. MISSING. NO DOWN AND LOCKED INDICATION OF NOSE GEAR UPON DESCENT INTO SEA. CYCLED GEAR ONCE AND GREEN LIGHT ILLUMINATED AFTER APPROXIMATELY 4 MINUTES. FOUND 2 OF 3 RIVET - [SDR 95ZZZM547](https://openairdocs.org/sdr/95ZZZM547), Sep 21, 1995: BLEED DUCT. LEAKING. NR 3 ENGINE FIRE WARNING SOUNDED IN FLIGHT. DISCHARGED LEFT FIRE BOTTLE. INSPECTED NR 3 ENGINE FOR FIRE DAMAGE, NONE FOUND. REPLACED NR 3 ANTI-ICE VALVE, 13TH S ## FAA accident and incident reports (3) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 20010331012349I](https://openairdocs.org/incident/20010331012349I), Mar 31, 2001: Boeing 72722C (N421EX), Indianapolis, IN. (-23) Enroute from denver to Indianapolis, ryan's B-727 reported a hydraulic problem. The captain declared an emergency and uneventful landing was accomplished… - [Incident 19980121004719I](https://openairdocs.org/incident/19980121004719I), Jan 21, 1998: Boeing 72722C (N421EX), Baltimore, MD, Minor damage. Narrative: during pushback, tug skidded on a patch of ice and "jack knifed" to 80 degree nose wheel left turn limit. Aircraft brakes were not set. Tow bar was… - [Incident 19900310018599I](https://openairdocs.org/incident/19900310018599I), Mar 10, 1990: Boeing 72722C (N421EX), Grand Rapids, MI, Minor damage. Lost directional control on rollout. Veered off runway. Struck runway lights before returning to runway. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.