# NTSB MKC72DCD40: Aero Comdr 500-B, N553HH, Waterloo, IA, October 18, 1971

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: October 18, 1971
- Place: Waterloo, IA · WATERLOO, IA
- Location: 42.4928° N, 92.3430° W: Placed by OpenAirDocs: center of Waterloo, IA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.4928&lon=-92.3430&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report June 16, 1972
- Report: Brief approved by the director
- NTSB case key (mKey): 164158
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC72DCD40
- Page: https://openairdocs.org/ntsb/MKC72DCD40

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4022  71/10/18   WATERLOO,IOWA       AERO COMDR 500-B    CR-  0  0  1  NONCOMMERCIAL             ATP,FLIGHT INSTR., AGE
        TIME - 0923                    N553HH              PX-  0  0  2  CORP/EXEC                 56, 12000 TOTAL HOURS,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            8050 IN TYPE, INSTRUMENT
                                                                                                   RATED.
        NAME OF AIRPORT - WATERLOO
        DEPARTURE POINT             INTENDED DESTINATION
          DAYTON,OHIO                 WATERLOO,IOWA
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           WHEELS-UP                                                LANDING: LEVEL OFF/TOUCHDOWN
        PROBABLE CAUSE(S)
           AIRFRAME - LANDING GEAR: NORMAL RETRACTION/EXTENSION ASSEMBLY
           MISCELLANEOUS ACTS,CONDITIONS - LACK OF LUBRICATION-SPECIFIC PART,NOT SYSTEM
           MISCELLANEOUS ACTS,CONDITIONS - CORRODED/CORROSION
        REMARKS- R GR BEARING BETWEEN UPPER AND LOWER STRUT ASSY FROZEN.NO LUBRICATION WITHOUT DISASSEMBLY OF GR.
```

## Aircraft

- Registration: [N553HH](https://openairdocs.org/deregistered/N553HH-1975-05-09), registration cancelled 1975-05-09, S/N 500B92911 (OpenAirDocs)
- Reported make and model: AERO COMDR 500-B
- Registry model: [Aero Commander 500-B](https://openairdocs.org/model/aero-commander-500-b) (registry code 0141106) (OpenAirDocs)
- Category: Airplane
- Engines: reciprocating
- Damage: Substantial damage
- Airport: Waterloo

## Other investigations on N553HH (2)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB IAD75FLQ11](https://openairdocs.org/ntsb/IAD75FLQ11), Dec 29, 1974: Aero Comdr 500B (N553HH), Paducah, KY, substantial damage
- [NTSB MKC69D0339](https://openairdocs.org/ntsb/MKC69D0339), Jan 27, 1969: Aero Comdr 500-B (N553HH), Waterloo, IA, substantial damage

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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